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China raises emergency level as heavy rain triggers floods - watching Three Gorges Dam - July 7, 2020
China raises emergency level as heavy rain triggers floods - watching Three Gorges Dam - July 7, 2020
China raises emergency level as heavy rain triggers floods
3 MIN READ
SHANGHAI (Reuters) - China raised its national emergency response level on Tuesday as days of torrential rain triggered flood warnings across the country, killing more than 100 people and disrupting the first day of national college exams.
E.China’s Jiangxi Province declares wartime state as China’s largest freshwater lake hits record flood level
By Xu Keyue Source: Global Times Published: 2020/7/12 13:05:39
snip
East China's Jiangxi Province has entered a wartime footing and declared a top-level emergency response for flood control and disaster relief, while China's national water resources authority lifted its emergency response to Level Ⅱ as water levels in rivers and lakes exceeded historical records.
According to local media, the water level of Xingzi station, the landmark hydrographic station of Poyang Lake, China's largest freshwater lake, on Sunday 0:00 am reached 22.53 meters, one centimeter above the "1998 flood level of 22.52 meters," making it the highest level in the lake since hydrologic records began.
The average rainfall in the Yangtze River Basin exceeded the same period in 1998
July 14, 2020 01:28 Beijing News
Original title: The average rainfall in the Yangtze River Basin exceeded the same period in 1998
Since June this year, there have been 433 rivers with over-alarm floods in total, of which 109 rivers have over-protected floods and 33 rivers have over-historic floods. The No. 1 flood occurred in the Yangtze River, the upper reaches of the Yellow River, the Xijiang and Beijiang Rivers, and the Taihu Lake in the Pearl River Basin. From June 2 to July 12, at 6 o'clock, the Central Meteorological Observatory issued a rainstorm warning for 40 consecutive days, becoming the longest time since the rainstorm warning business was launched in 2007.
How was the disaster this year? What are the characteristics of the flood situation compared with 1998? On July 13th, the State Council Office held a regular briefing on the State Council’s policies. The Secretary-General of the National Disaster Reduction Committee, Deputy Minister of Emergency Management Zheng Guoguang, Deputy Minister of Water Resources Ye Jianchun and other relevant ministries and commissions introduced the situation of flood control and drought relief and responded to reporters. ask.
In addition, the China Meteorological Administration organized experts such as Ma Xueke, chief forecaster of the Central Meteorological Observatory, Wang Yongguang, chief forecaster of the National Climate Center, Huang Lei, a researcher of the Climate Change Adaptation Office of the National Climate Center, and Zhai Jianqing, an associate researcher of the National Climate Center. The rain is fierce.
1 What are the characteristics of the flood situation this year?
is mainly reflected in the four aspects of rainfall concentration and flood concentration
Deputy Minister of Water Resources Ye Jianchun introduced that the characteristics of the flood situation this year are mainly reflected in four aspects:
Rainfall is concentrated. Since June, heavy rainfall has been concentrated in the Yangtze River, Taihu Lake and other river basins, and the cumulative rainfall has averaged 50% to 1.6 times more than normal. Especially in Wuyuan, Jiangxi, rainfall reaches 1966 millimeters. "The average annual rainfall in Beijing is 630 millimeters. Wuyuan has been raining in Beijing for three years since June."
Flood concentration. Since June this year, No. 1 floods have occurred in the Xijiang and Beijiang rivers of the Pearl River, the upper reaches of the Yellow River, the Yangtze River and Taihu Lake. There are 433 super-alarms in the country, accounting for 96% of this year. Among the 433 rivers, there are 422 in the south, except for a few in the Yellow River and other river basins, the others are in the south. Time is mainly concentrated since June, and most of the space is in the south.
The floods of the Yangtze River and Taihu Lake were concurrent. At present, there are over-alarms across the Yangtze River's main stream under supervision. Over-protection floods have also occurred in the middle Dongting Lake. Over-alarms have also occurred in Taihu Lake. The water level is close to 4.45 meters. According to the forecast, it will continue to rise. It may even exceed 4.65 meters. 4.65 meters is Taihu Lake. Guaranteed water level.
The floods in small and medium-sized rivers are frequent and repeated. Among the small and medium-sized rivers, there are 397 super-alarms, 100 of which are over-guaranteed, a high proportion, and 27 exceed the highest water level in history.
2 What happened to the disaster caused by heavy rainfall?
Twenty-seven provinces (autonomous regions and municipalities) suffered 37.89 million disasters
The reporter learned from the Ministry of Water Resources that there are currently 433 rivers with over-alarm floods, including 109 rivers with over-protection floods and 33 rivers with over-history floods. The No. 1 flood occurred in the upper reaches of the Yangtze River, the Yellow River, the Xijiang, Beijiang and Taihu Lakes of the Pearl River Basin. At present, the water level below the Jianli River and the Dongting Lake, Poyang Lake and Taihu Lake are still in super-alarm status. The rest of the rivers and rivers have stable water conditions.
Zheng Guoguang, Secretary-General of the National Disaster Reduction Committee and Deputy Minister of Emergency Management Department introduced that this year my country has a large total rainfall and local intensity. Since June, 38.789 million people in 27 provinces (autonomous regions and municipalities) have been affected, and 141 people have been killed or missing.
According to the national water regime information on July 12, the water levels of 10 hydrological stations in the main stream of the Yangtze River exceeded the alarm level, and the water levels of Poyang Lake and Dongting Lake exceeded the alarm level. All the hydrological stations in Poyang Lake, the most important water area in Jiangxi and the largest freshwater lake in the country, exceeded all alarms. At least four hydrological stations in Poyang Lake, such as Kangshan Station, Xingzi Station, Tangyin Station and Raohe Poyang Station, exceeded the historical flood level in 1998. In the Taihu Lake Basin, as of the 12th, the Taihu Lake water level exceeded the warning water level for the 15th consecutive day.
3 How is the flood situation in the next few days?
14 to 16 days of the Yangtze River Basin reproduced a large range of heavy rainfall
According to the Central Meteorological Observatory's July 13th news, from July 14th to 16th, the Yangtze River Basin will once again experience large-scale heavy rainfall, and heavy rains will occur in Sichuan, Chongqing, Shaanxi, Hubei, Anhui, Jiangsu, Zhejiang and Shanghai.
The five consecutive heavy rains that occurred after mid-June were concentrated in the southwestern region to the middle and lower reaches of the Yangtze River. From July 14th to 16th, the Yangtze River Basin will once again experience large-scale heavy rainfall, with a high degree of overlap between the heavy rainfall falling area and the previous period. In the northeastern and southern parts of the Sichuan Basin, northern Chongqing, southeastern Shaanxi, northeastern Hubei, southeastern Henan, central and southern Anhui, southern Jiangsu, Shanghai, northern Zhejiang and other regions, the cumulative rainfall is 100-180 mm. Up to 200~300 mm.
From June 1st to July 13th, most of the surface rainfall in the main stream of the middle and lower reaches of the Yangtze River Basin was greater than 500 mm, and the surface rainfall in the Hankou to Jiujiang River Basin exceeded 800 mm, more than the same period in 1998. It is estimated that from July 14 to 16, most of the main stream of the middle and lower reaches of the Yangtze River will have 50 to 100 millimeters of surface rainfall, and the upper reaches of the Yangtze River will reach 40 to 60 millimeters of rainfall from Yibin to Yichang.
4 How does the recent rain situation compare with the same period in 1998?
The average rainfall in the Yangtze River Basin is the highest since 1961
Since June 1, there have been six heavy rainfalls in the south. As of July 12, the average rainfall in the Yangtze River Basin reached 403 millimeters, 49% more than the same period in normal years, and exceeded 2016 (395 millimeters) and 1998 (358 Mm) became the most in the same period since 1961 with complete meteorological data.
Ye Jianchun introduced that at present, the water level of some stations of Poyang Lake exceeds 1998, and the water level of the main control stations of the middle and lower reaches of the Yangtze River is lower than 1998.
Zheng Guoguang said that the current rain situation cannot be simply compared with 1998. In 1998, after the rain belt was lifted to the north, it returned to the middle and lower reaches of the Yangtze River and continued until the end of August. It lasted for a very long time. The Yangtze River embankment was soaked in water for a long time, and the rescue efforts were very strong. At present, the domestic flood control and dispatching capabilities are much stronger than in 1998, and the National Defense General's command and dispatching mechanism has gradually been improved. Therefore, compared with 1998, our country's ability to defend against floods is now stronger. From a meteorological point of view, it is unlikely that there will be two months of concentrated precipitation similar to 1998.
Zhai Jianqing said that considering the scope, duration and rainfall, it was found that since June 27 (as of July 9), the comprehensive intensity of the regional rainstorm weather process in southern my country was the fifth strongest since 1961 (first in 1998). Compared with the 1998 flood, the southern regional heavy rain weather process from June 27 to July 9 this year has the characteristics of long duration and wide range of influence.
5 How to deal with the breakthrough of the water level of Poyang Lake?
1000 fire rescue commanders supported the flood control in key areas such as Poyang Lake
According to the client's news of the People's Daily, in response to the current severe flood control situation, the State Defense General Administration decided to send six more ministerial-level working groups to be led by comrades from the ministries and commissions of the Ministry of Public Security, the Ministry of Natural Resources, the Ministry of Water Resources, the Emergency Management Department, and the China Meteorological Administration. The team went to seven key areas including Jiangxi, Anhui, Hunan, Hubei, Jiangsu, Zhejiang and Chongqing to guide the inspection of flood prevention and relief work.
According to the severe flood situation of Poyang Lake in Jiangxi Province, the Emergency Management Department urgently dispatched 1,000 professional fire rescue commanders in the vicinity of flood relief, water rescue, geological disaster rescue, etc., and quickly assembled to support flood relief in key areas such as Poyang Lake.
Zheng Guoguang said that as of the 12th, Jiangxi Province had invested 70,500 people in flood relief and rescue work, and the average number of embankment patrols per kilometer was 29.
6 What is the focus of the next stage of flood control?
Continue to do a good job in flood control of southern rivers
Ye Jianchun introduced that my country will soon enter the “seven times and eight times” (late July to early August) critical period of flood control. It is expected that large regional floods are likely to occur in the middle reaches of the Yellow River, the Haihe South System, the Songhua River, the Liaohe River, the Yangtze River, the Huaihe River, and the Taihu Lake. The water levels in the Yangtze River and Taihu Lake are now relatively high and may continue for some time. It is expected that the rain belt will be lifted to the north in the later period, and regional floods may occur in the northern rivers. Therefore, in the next step, while the flood prevention of the southern rivers will continue, the flood prevention preparations in the northern regions will be strengthened.
Northern China should also focus on the "three major risks" of excessive floods, reservoir accidents and flash floods. "There have been no floods in these basins in the north for many years. The awareness of flood control and the project's ability are relatively low and weak. Therefore, the north needs to focus more closely." Ye Jianchun said.
7 How strong is the recent southern heavy rain?
Daily rainfall in many places broke through historical extremes
According to the statistics of the National Climate Center, since the flood season, as of July 10, there have been 15 large-scale heavy rainfall processes in southern my country. Among them, from June 11 to July 10, the main rain belt northwards to the middle and lower reaches of the Yangtze River, the rainy center is located in northern Hunan, northwestern Jiangxi, eastern Hubei, southern Anhui, central Zhejiang and other places, Zhejiang, Anhui, Jiangxi Bureau The cumulative precipitation in the area exceeds 800 mm.
Daily rainfall in many places broke through historical extremes. For example, during the heavy rainfall from July 4th to 10th, the daily rainfall of Huangmei, Xishui, Hubei, Ji'an, Xiajiang, and Longhui, Hunan, and other national meteorological observatories broke through extreme values.
From June 1st to July 9th, Hubei, Anhui, Jiangsu, Guizhou, Zhejiang, Chongqing, Hunan, Jiangxi, Shanghai, Guangxi, Sichuan and other provinces totaled 85 stations with cumulative precipitation exceeding half of the annual precipitation.
The heavy rain brought pressure on the flood control of the Yangtze River Basin. From June 1 to July 9, the average precipitation in the Yangtze River Basin reached 369.9 millimeters, 54.8 millimeters more than the same period in 1998. It is the history since 1961 (with complete meteorological observation data) The most during the same period.
8 Why did the southern rain fall into the "wheel war"?
Mainly related to the situation of atmospheric circulation since June this year
Since June, there have been frequent heavy rainfalls in the southern region. Not only are there many heavy rainfall processes, but the heavy rainfall is round after round, with a very short interval.
Ma Xue explained that this is mainly related to the atmospheric circulation situation since June this year.
The Northwest Pacific Subtropical High (subtropical high for short), which has a huge impact on my country, is a stable and less dynamic warm deep weather system. The southwestern airflow on the northwest side of the periphery is just an important channel to transport water vapor to the rainstorm area.
Specifically, since June this year, the subtropical high has been stronger than in the same period of previous years. The southwestern airflow around its periphery transports abundant water vapor from the Bay of Bengal or the southern sea area of China to southern China. At the same time, the cold air activity in the north is also relatively frequent, causing The situation where cold and warm air continue to converge in the southern region has resulted, resulting in frequent and continuous heavy rainfall.
9 Is it possible that continuous heavy precipitation is abnormal climate?
The early entry of Mei and the strong Meiyu front are the reasons for the abnormal rainfall in the Meiyu season in the middle and lower reaches of the Yangtze River
In recent years, extreme weather and climate events have been increasing, and the climate seems to be more and more abnormal. Is the abnormal climate behind the continuous heavy precipitation?
Wang Yongguang introduced that it was Meiyu, a "monster", that triggered the heavy precipitation process. Specifically, the early entry into Meihe and the strong Meiyu front are the reasons for the abnormally high rainfall during the Meihong season in the middle and lower reaches of the Yangtze River.
This year, Meiyu in the Jiangnan region was 7 days earlier than in previous years, and Meiyu's "main battlefield", the middle and lower reaches of the Yangtze River, had already entered Meimei on June 9. It turned out that the onset of the South China Sea summer monsoon was earlier this year, and the location of the ridge line of the Western Pacific Subtropical High in the middle and early June was north, which together led to the early entry of plums in the middle and lower reaches of the Yangtze River.
In addition, this "monster" also obtains energy from other places, causing Mei Yufeng to be strong. A weak El Ni?o event occurred in the autumn of 2019, and the temperature of the North Indian Ocean was abnormally warm, resulting in a significantly stronger secondary high.
At the same time, the meridional circulation at middle and high latitudes developed and cold vortices were active. The cold air exploded on the way to the middle and lower reaches of the Yangtze River. As a result, the cold and warm air converged in the middle and lower reaches of the Yangtze River, which caused the Meiyu front to be stronger and the precipitation in the middle and lower reaches of the Yangtze River to be significantly higher.
10 Rainband movement reduces flood control pressure?
The pressure of flood control in the Yangtze River Basin will not be reduced
Since July, my country's main rain belt has been maintained from the east of the southwest to the middle and lower reaches of the Yangtze River. From July 11 to 12, the main rain belt lifted northward in stages.
After a short intermittent period, according to the Central Meteorological Observatory forecast, from July 13 to 16, the main rain belt will fall south to the middle and lower reaches of the Yangtze River. During this period, the main areas of heavy rainfall will appear in the middle and lower reaches of the Yangtze River, and some areas in eastern Chongqing, northern Guizhou, Hubei, northern Hunan, northwestern Jiangxi, central and southern Anhui, southern Jiangsu, Shanghai, northern Zhejiang, etc. To the rainstorm, the local heavy rainstorm.
Ma School reminds that this has a great degree of coincidence with the heavy rain on the 4th to 7th, and it is necessary to pay attention to the superimposed impact of precipitation.
Even if the eastern part of the rain belt rises north in mid-to-late July, the pressure for flood control in the Yangtze River Basin will not be reduced. The obvious precipitation in the middle and upper reaches of the Yangtze River will still pose a threat to rivers and lakes with high water levels.
11 Will there be more extreme climate events?
If greenhouse gas emissions are not controlled, it will increase in the future
The climate change assessment report issued by the United Nations Intergovernmental Panel on Climate Change (IPCC) pointed out that there will be more high-temperature and heavy rain events in some parts of the world in the 21st century, and the degree of drought will increase, threatening the food, water and energy security of countries.
Huang Lei introduced that although it is currently difficult to attribute a single weather and climate event (such as the southern rainstorm) directly to global warming, under the background of global warming, some extreme weather and climate events are indeed increasing.
In fact, under the background of global warming, since 1951, my country's average temperature and extreme temperature have shown a significant upward trend, and some extreme weather and climate events show the characteristics of stronger intensity, more frequent occurrence, and longer duration.
The prediction results of the climate model show that if anthropogenic greenhouse gas emissions are not controlled, the frequency, intensity and duration of some extreme events in the world will increase significantly. By the end of the 21st century, the probability of high temperature heat wave events in land areas will be 5 -10 times, the frequency of extreme heavy precipitation events will also increase in most parts of the world.
Therefore, it is urgent to further enhance China's ability to respond to extreme disasters. It is necessary to take extreme disaster response as the core content of adapting to climate change, strengthen risk prevention measures for extreme disasters, strengthen monitoring and early warning of extreme weather and climate events, and manage meteorological disaster risk, and carry out key regions 1. Impact assessment of climate change in key industries, strengthening ecological and environmental meteorological services, and improving government-led, department-linked, and socially involved disaster prevention and mitigation mechanisms.
Number theory
4206 square kilometers
Yesterday, China Meteorological Administration reported that the area of the main body of Poyang Lake and the surrounding waters increased rapidly due to the continuous impact of heavy rainfall and upstream water. Satellite monitoring shows that at 18:00 on July 8, the main body of Poyang Lake and the surrounding water area reached 4,206 square kilometers, the largest in the past 10 years.
185 seats
The reporter learned yesterday from the Jiangxi Provincial Flood Control News Ventilation Conference that as of the evening of July 12, the 185 drainage facilities in Poyang Lake District had single diversion polders (available for agriculture at low water levels and flood storage at high water levels). In floods, the remaining 32 single-retreat dikes were all opened yesterday, and flood gates were opened to store flood water. After analysis, the water level in the lake area can be reduced by 25-30 cm.
2278 people
The General Administration of State Defense has specified 2,278 people in charge of flood control and drought relief at various local levels and made them public.
Flood control emergency response rose to level Ⅱ: over 200 rivers with over-alarm floods in 10 days
July 13, 2020 23:04 Daily Economic News
Original title: Flood control emergency response rises to level Ⅱ! Over 10 rivers with over-alarm floods in just 10 days
Every reporter Li Keyu Every editor Liao Dan
In the past month, the floods caused by heavy rainfall in the south have affected the people of the whole country. The latest news shows that this round of floods has entered a new stage, and the nationwide flood situation has been further upgraded on the previous basis.
It is reported that, according to the current flood situation and in accordance with the “Ministry of Water Resources Flood and Drought Disaster Emergency Response Response Work Regulations”, the Ministry of Water Resources upgraded the flood and drought disaster prevention level III emergency response to level II at 11:00 on July 12. On the afternoon of the same day, the National Defence General also released news that, according to the relevant provisions of the National Flood Control and Drought Relief Emergency Plan, after consultation and study, the National Defence General decided to raise the flood control level III emergency response to level II.
At the State Council’s regular briefing on the State Council’s policy held on the morning of July 13, Ye Jianchun, deputy minister of water resources, introduced that since June, there have been 433 rivers with over-alarm floods in the country, of which 109 have exceeded the protection threshold. There are 33 super history. The Yangtze River, the upper reaches of the Yellow River, the Xijiang, Beijiang, and Taihu Lakes of the Pearl River Basin all experienced No. 1 flood this year. At present, the Yangtze River mainstream under the Jianli River and Dongting Lake, Poyang Lake and Taihu Lake are still super-alarm.
Previously, according to the Ministry of Water Resources, since July 4th, 212 rivers had floods above the alarm level, 72 of which were over-guaranteed, and 19 were beyond historical records. Taihu Lake maintained its over-alarm status.
On July 12, the Ministry of Water Resources raised the level III emergency response of flood and drought disaster prevention to level II. The picture shows that the flood disaster on July 11 led to the Chengcheng street in the county town of Rongshui Miao Autonomous County in Guangxi Zhuang Autonomous Region. People rowed in boats. Xinhua News Agency
Poyang Lake water level exceeds historical extreme value
"Daily Economic News" reporter noted that it took only 10 days from the Ministry of Water Resources to start the flood and drought disaster prevention level IV emergency response to increase the response level to level II, and it took only 10 days; and the national general flood control emergency response increased from level IV to level II It took only 10 days. The two Level II emergency responses were “started” on the same day, indicating that the current situation of our national defense floods is already very severe.
According to the Ministry of Water Resources, since July 4, 212 rivers have exceeded the alarm level, 72 of which have exceeded the security level, and 19 have exceeded the historical record. At 10 o'clock on the 8th, the water level of Jianli to Datong River in the middle and lower reaches of the Yangtze River exceeded 0.22 to 1.06 meters, and the water level of the Huangshigang Station in the main stream of the Yangtze River reached 24.51 meters, exceeding the warning water level by 0.01 meters. At this point, all sections of the Yangtze River main stream below Jianli exceeded the warning water level.
The National Defense Agency also released news that as of 12:00 on July 12, this year, floods and floods have caused 37.89 million disasters in 27 provinces (autonomous regions and municipalities) in Jiangxi, Anhui, Hubei, and Hunan, 141 people were missing and 2.246 million were emergency. With the transfer and resettlement, 1.258 million person-times needed emergency life assistance; 28,000 houses collapsed; the affected area of crops was 3532 thousand hectares; direct economic loss was 82.23 billion yuan.
At present, which areas in the country are relatively heavily affected by floods? In response to this, a reporter from the "Daily Economic News", after consulting the 12-day real-time hydrological data provided by the National Water and Rain Information Network of the Ministry of Water Resources, found that the water conditions in the middle and lower reaches of the Yangtze River and the Poyang Lake, Dongting Lake, and Taihu Basin are relatively severe. The information shows that the data recorded by the hydrological stations in these areas is in an over-alarm state.
Among the above-mentioned areas, the Ganjiang and Poyang Lake basins in Jiangxi Province are the most severely flooded. Of the 10 super-alarm hydrological stations in the Poyang Lake basin, 8 have a water level that is more than 2 meters above the warning water level. There are 4 hydrological stations whose water level exceeds the warning water level by more than 3 meters.
Among them, the water level of Xingzi Hydrological Station in Poyang Lake District reached 22.58 meters, exceeding the warning water level by 3.58 meters.
The Jiangxi Provincial Department of Water Resources also released news that the water level at Poyang Lake Xingzi Station was 22.53 meters on July 12, exceeding the maximum red mark of the water gauge (0.012 meters on August 2, 1998, the flood level was 22.52 meters), which marked China’s largest Freshwater Lake-The water level of Poyang Lake has exceeded the historical extreme value since the hydrological record.
Recently, after a scientific monitoring and evaluation of the changes in the main body and surrounding waters of Poyang Lake in Jiangxi Province, the China Meteorological Administration showed that the main body and surrounding waters of Poyang Lake reached 4,206 square kilometers, the largest in the past 10 years.
Facing with the rising water level, the Jiangxi Provincial Defense Index has urgently upgraded the province's flood control emergency response to the first level at 10:00 on July 11. This is the first time that Jiangxi has launched a flood control first response since 2010.
At 0:00 on July 12, the water level in the water level well of Xingzi Station, the iconic hydrological station of Poyang Lake, overflowed with the red mark of "1998 flood level 22.52M", marking China’s largest freshwater lake water level breaking through the historical extreme value Xinhua since the hydrological record. Social map
Will the recent heavy rainfall continue?
What is the cause of the large-scale flood disaster in southern my country? The reporter of "Daily Economic News" noticed that the long-term heavy rainfall for more than a month in a row was the main factor affecting the flood situation.
In response, Zhang Jiatuan, the Emergency Commander of the Emergency Management Department, stated that as of July 2, the Central Meteorological Observatory had issued rainstorm warnings for 31 consecutive days. The duration was rare in recent years. Heavy rains caused floods, debris flows and other disasters.
Zhang Jiatuan analysis said that in the whole June, the national flood situation showed several characteristics: the total amount of rainfall is large, the local intensity is large, and the duration is long. As of June 30, the national average precipitation was 293.9 millimeters, 7.3% more than the same period of the previous year, the tenth most in the same period since 1961. Since the beginning of the flood season, 75 counties (cities) of the country have daily rainfall exceeding the extreme value of the month, and 9 counties (cities) of daily rainfall have broken local historical records.
The reporter noticed that in July, the heavy rainfall in the southern part of my country continued. According to data released by the Central Meteorological Observatory, since July 4th, heavy rainfall has occurred in the southwestern region to the middle and lower reaches of the Yangtze River.
As of the morning of July 9, the cumulative rainfall in eastern Chongqing, central and northern Guizhou, northern Hunan, southern and eastern Hubei, northwestern Jiangxi, southern Anhui, southern Jiangsu, northern Shanghai and western Zhejiang totaled 100-250 mm. Zhangjiajie, Hunan ( 5.090, 0.05, 0.99%) and 300-500 mm in parts of southeastern Hubei, southern Anhui, northwestern Jiangxi, and western Zhejiang, and 999 mm in Xishui County, Huanggang City, Hubei Province.
According to statistics, the daily rainfall of 20 national meteorological stations exceeded the July extreme during heavy rainfall. Among them, the total daily rainfall of 6 national meteorological stations in Hubei and Jiangxi exceeded the historical extreme.
And from July 9 to July 10, 7 national meteorological observatories such as Ji'an in Jiangxi broke the historical extreme value, and 11 national meteorological observatories broke the July extreme value.
Will the heavy rainfall continue in the next period of time? In this regard, the meteorological analysis data gives the answer. According to the forecast of the Central Meteorological Observatory, in the next 10 days (July 12-21), the cumulative rainfall in most areas of the Sichuan Basin, Huanghuai, Jianghan, Jianghuai, northern Jiangnan and northern Guizhou, Yunnan and other regions will be 50% more than the same period of normal years. Doubled, more than doubled in some areas.
It is worth noting that the Central Meteorological Observatory also predicts that the possibility of "northward lift" of the main rain in my country in the future will increase the pressure for the flood to spread beyond the Yangtze River Basin. According to reports, in the next 11-20 days (July 22-31), the main rain belt in the east of China will be carried northward to the areas of North China, Northeast China and Huanghuai. The cumulative rainfall in most of the above areas will be 30% to 70% higher than normal. The situation is more than doubled.
Three Gorges Reservoir relieves flood control pressure
The reporter noticed that in response to a large-scale flood situation, all parties acted quickly.
The executive meeting of the State Council held on July 9th made arrangements for further flood prevention and relief work. The meeting pointed out that all relevant departments in various places should implement the deployment of the Party Central Committee and the State Council, adhere to the supremacy of life, and do their best to prevent floods and disasters. One is to consolidate the responsibilities of all parties. The persons in charge of flood control at all levels should sink to the front line, strengthen monitoring and early warning, and strengthen coordination and dispatch.
The second is to do a good job in flood control of large rivers and river basins, strengthen the flood control of small and medium-sized rivers, eliminate risks of small and medium-sized reservoirs and prevent floods in cities.
The third is to increase material and financial support to help local people properly resettle the affected people, carry out flood repairs, repair and production self-help. At the same time, we will do a good job in drought resistance in some areas and respond to droughts and floods.
In addition, the relevant person in charge of the Emergency Management Department introduced that since the flood season, the national comprehensive fire rescue team has participated in various types of flood relief and rescue operations for 4,830 times, dispatched 7,498 fire trucks, more than 46,800 commanders, and rescued 14,866 people trapped in distress. , Evacuation and transfer of more than 61,000 trapped people.
The National Development and Reform Commission said that in order to support the disaster area to do emergency relief work, the National Development and Reform Commission urgently issued a disaster relief emergency subsidy with a central budget of 309 million yuan.
At present, people from all walks of life are also paying close attention: What important role has a series of large-scale water conservancy projects in the Yangtze River Basin played in response to the flood?
In this regard, the reporter of the "Daily Economic News" learned from the Three Gorges Group that from July 6 to 11, the Three Gorges Group Yangtze Power (19.160, 0.27, 1.43%) belongs to the Yangtze River main cascade, which is fully operated by 82 units It was reduced to 65 units, and a total of 17 units were shut down, continuously reducing the discharge flow, and fully supporting flood control in the middle and lower reaches of the Yangtze River.
At 12:00 on July 11, the discharge volume of the Three Gorges Reservoir was reduced to 19,000 cubic meters per second. This is the fifth time the discharge volume of the Three Gorges Reservoir has been reduced since July 6 by nearly 50%. The continuous adjustment of the Three Gorges Reservoir in the past few days has effectively reduced the speed and magnitude of the rise of the water level in the middle and lower reaches of the Yangtze River, and has strongly eased the pressure of flood control in the middle and lower reaches of the Yangtze River.
The Three Gorges Group also introduced that as of 11:00 on July 11, the water level of the Three Gorges Reservoir is 150.10 meters, and the available flood storage capacity is 19.56 billion cubic meters, accounting for 88% of the total flood storage capacity. The Three Gorges Reservoir has sufficient capacity to cope with the next wave of incoming water .
The Wuhan section of the Yangtze River becomes a "hanging river" with the river surface higher than the pavement outside the river embankment
Newson July 14, 2020 at 13:11
It is reported that the Yangtze River has become the Xuanhe Hankou Wuhan Pass in Wuhan: the water surface of the Yangtze River is significantly higher than that of Yanjiang Avenue
On the evening of July 13, Wuhan Jiangtan Park was closed, and the gates were being blocked and raised. At the 18th Wharf of Wuhan Port, the river surface is much higher than the road outside the river embankment. In Wuchang River Beach, the river water has submerged to the top of the original hydrophilic platform street lamp.
5.98 million people were affected by floods in Jiangxi
2020-07-13 23:47 Source: unknown
The latest statistical information shows that the flood disaster in Jiangxi has affected more than 5.9 million people, and the direct economic loss exceeded 10 billion. The reporter learned from the Jiangxi Provincial Defense Index that according to local reports, as of 16:00 on July 13th, the floods and floods that started on July 6th included 10 districts and municipalities in Nanchang, Jingdezhen, Jiujiang, Shangrao and Ganjiang New District, a total of 99 A total of 5.98 million people were affected in the counties (cities, districts, and functional areas), and 510,000 people were resettled in an emergency. 193,000 people were in need of emergency assistance. The affected area of crops was 556.9 thousand hectares, 96.3 thousand hectares of crop failure, and 1,465 houses collapsed. There were 1207 houses and 2664 houses severely damaged, and 4265 houses and 7776 houses were generally damaged. The direct economic loss was 10.21 billion yuan. The disaster situation is still under further statistical verification. The scope of flood disasters in Jiangxi has continued to expand in recent days. According to official statistics, as of July 8 at 23:30, the floods and floods that started on July 6 had 1.796 million people in 50 counties in 6 cities in Jiangxi, and 151,685 people were resettled in an emergency. 53,000 people needed emergency life assistance. The affected area of crops was 127.3 thousand hectares, 195 houses with 86 collapsed houses, 326 houses with severe damage to 221 houses, and 1230 houses with 761 houses damaged in general, with a direct economic loss of 1.24 billion yuan. As of 15:30 on July 12, the flood disasters that began on July 6 included 10 districts and cities including Nanchang, Jingdezhen, Jiujiang, and Shangrao, and a total of 99 counties (cities, districts, and functional areas) in Ganjiang New District. 5.505 million people were affected by the disaster, 4 people died due to the disaster, 475,000 people were urgently resettled, 183,000 people needed emergency life assistance, the affected area of the crops was 510.7 thousand hectares, 83.9 thousand hectares were cut off, 463 houses were collapsed and 1082 houses were seriously damaged, and 869 houses were seriously damaged 2068 rooms, generally 3655 houses and 7056 rooms were damaged, with a direct economic loss of 8.13 billion yuan.
There are answers to these questions about storms and floods!
July 16, 2020 21:33 Source: Economic Daily to participate in interaction
Heavy rain wave after wave, Hong Feng wave higher than wave.
Since the beginning of the flood season, no matter whether it is in the south or the north, the hearts of small partners everywhere are tightly caught by the flood disaster.
Especially at the moment when the information is flying, the historical high point on the left is risky, and the water level on the right is dangerously dangerous. It makes people look confused, full of doubts, and nowhere to answer.
Today, we sorted out the authoritative information, and all you want to know are below↓↓↓
The water level of the Three Gorges has soared. Is the downstream area safe?
Every year when floods come, the Three Gorges Dam will be pushed up to the cusp. No, the real-time water regime shows that the water storage capacity of the Three Gorges Reservoir has skyrocketed in recent days, especially the water level of the reservoir has risen rapidly by nearly 5 meters in the past two days.
People can't help but ask, is the water level in the Three Gorges soaring, is the downstream area safe?
In fact, the rapid rise of the Three Gorges water level does not mean unsafe. On the contrary, the rapid rise is precisely because the Three Gorges is protecting downstream safety. The Three Gorges Dam blocks upstream water, which has reduced pressure on the Wuhan section of the Yangtze River that Hongfeng has just passed in the past two days and the "key care" of the rain belt in the subtropical high after the southward retreat.
Moreover, as early as June 8, the Three Gorges Reservoir lowered the water level to the flood limit level (145 meters) in advance, and vacated the flood control reservoir capacity of 22.15 billion cubic meters, leaving room for the unknown flood. According to the existing inventory, the Three Gorges Reservoir can withstand floods once in a thousand years on the premise of ensuring the safety of the downstream Jingjiang River.
Are our flood control and relief forces still sufficient?
As one of the worst-hit areas in the flood season this year, Jiangxi has issued red flood warnings for several consecutive days. In Jiangzhou Town, Jiujiang City, Jiangxi Province, due to insufficient manpower for flood control of the 41.36-kilometer dam, the town government issued an open letter a few days ago summoning hometowners to fight floods. At present, the returnees have accumulated 4100 person-times.
The situation is so severe, are our flood control and relief forces still sufficient?
In response to the severe flood situation around Poyang Lake in Jiangxi Province, on July 13th, the Emergency Management Department has urgently dispatched more than 1,000 fire rescue commanders in Zhejiang, Anhui, Fujian, Hubei, Hunan and other provinces to assist Jiangxi.
Deputy Minister of Emergency Management Zheng Guoguang said that as of July 12, Jiangxi Province had invested 70,500 people in flood fighting and rescue, with an average of 29 people per kilometer of embankment patrols. At the same time, the Jiangxi Fire Rescue Corps placed 25 preparation points around the Poyang Lake Basin. 1360 fire rescue members were present at the scene. On the one hand, it was preset in advance, on the one hand, it was a timely emergency rescue, and the dangerous situation was effectively dealt with in a timely manner.
Of course, disaster relief forces are more beneficial, and I hope everyone can contribute to the southern flood relief.
Anhui emergency order 5 cities to prepare for the evacuation of some personnel, what happened?
On the evening of July 14, the Anhui Provincial Flood Control and Drought Relief Command issued an emergency order requesting the Anqing, Chizhou, Tongling, Wuhu, and Ma'anshan City defense targets to immediately evacuate the Yangtze River and the Bund Poles.
Suddenly asked some people to evacuate, what's the matter?
It is reported that the current water level across the Yangtze River in Anhui Province continues to exceed the warning level. It is expected that flood peaks will appear in major control stations along the river in the next 1 to 2 days, and some Jiangxinzhou and the Bund will face more severe flood threats.
Therefore, Anhui Province requires that the relevant municipal defense index should refer to the inhabited Jiangxinzhou and Bund Polder Transfer Warning Forms. Those who meet the warning conditions must immediately organize the evacuation of personnel and complete all evacuation tasks as soon as possible to ensure that no evacuation occurs. Not alone.
Why is Poyang Lake so important for "Kidney of the Chinese Earth"?
At 0:00 on July 12, the water level of Panyang Lake broke through the historical extreme value, reaching 22.53 meters, exceeding the 22.52 meters of the 1998 flood level.
On July 12th, the aerial photography was located on the east bank of Poyang Lake in the Zhuhu Lake of Poyang County, Jiangxi. On the one side is the clear lake in Zhuyang Lake of Poyang Lake, on the one side is the outer lake of Poyang Lake that has become muddy due to heavy rain, and it is separated by a dike Jingwei landscape. (Source: China News Network)
As of 7 o'clock on July 15, the water levels in Poyang Lake and Weilu areas continued to fall, but there were still 10 stations that exceeded the warning line. There are 1,007 dangerous cases in about 150 dikes in Jiangxi Province, of which more than 980 have been disposed of.
The watershed area of the Poyang Lake water system is 162,200 square kilometers, which is equivalent to 97% of the total area of Jiangxi Province and about 9% of the area of the Yangtze River Basin. Over the years, the average water volume injected into the Yangtze River through Poyang Lake's storage and storage is 145.7 billion cubic meters, accounting for 15.5% of the total water volume of the Yangtze River, exceeding the annual water volume of the Yellow River, Huaihe River and Haihe River.
Therefore, the water conditions at Poyang Lake Station are severe, and the flood control pressure of other sections of the middle and lower reaches of the Yangtze River is also increasing.
A new round of heavy precipitation is coming again, are we ready?
Rain keeps falling...
From July 14 to 16, the Yangtze River Basin once again ushered in the process of heavy rainfall. The accumulated rainfall in Hubei and Anhui and other regions reached 100 to 180 mm, and the local rainfall could reach 200 to 300 mm. From 17 to 19, the eastern and southwestern regions, There will also be a heavy rainfall process in the southeast of the northwest region, Huanghuai, Jianghan, Jianghuai, and northwestern Jiangnan.
Facing a new round of heavy precipitation, what are we going to do?
"In the past few days, we have been comprehensively investigating the consumption and reserves of materials in various places, and in accordance with the requirements for preventing over-standard floods, timely supply of emergency materials such as stones, sand, and wood to ensure that emergency rescue needs are met." Zheng Guoguang said.
At the same time, the water conservancy department is strengthening the inspection and defense of the reservoir and dispatching, urging the reservoir administrative, technical and inspection personnel to perform their duties, do a good job of inspection and defense, and ensure the safety of the reservoir.
In addition, the Ministry of National Defense and Emergency Management will give full play to the comprehensive advantages of all disasters and major emergencies, accurately prepare for the deployment of rescue forces in key areas and key parts, refine the action plan, and organize and coordinate comprehensive fire rescue operations as soon as possible. Teams, construction forces of central enterprises and social forces participate in flood relief.
Moved when he heard the order and walked towards danger.
I wish the frontline disaster relief personnel
Safe triumph!
Source: Economic Daily WeChat Official Account (ID: jjrbwx)
Is the flood situation in the Yangtze River controllable? Where is the pressure of flood control in Taihu Basin? Expert Interpretation of Emergency Management Department
2020
07/19 08:18
source:
CCTV News Client
Author:
Phone view
In order to do a good job in flood control and flood prevention, the Ministry of National Flood Control and Emergency Management requires all relevant departments in various regions to fully understand the severity and complexity of the current flood control and disaster relief situation, strengthen the deployment of flood control and disaster relief, take more effective and effective measures, and do their utmost Guarantee the safety of people's lives and property.
Zhang Jiatuan, Emergency Commander of the Emergency Management Department of the National Defense Office: First of all, from the upstream point of view, through the joint dispatch of the Three Gorges and more than 40 reservoir groups in the upper reaches of the Three Gorges, the floods are blocked in a scientific way. It should be said that the upstream floods are basically under control. . At present, the focus is mainly on the flood prevention of small and medium-sized rivers, geological disasters of mountain floods, the flood prevention safety of small and medium-sized reservoirs, and the prevention of urban waterlogging.
Recently, the overall water level of the main stream in the middle and lower reaches of the Yangtze River has been below the guaranteed water level. At present, there are more than 2,500 various types of dangerous situations in the five provinces in the middle and lower reaches of the Yangtze River, including 108 dangerous situations in the Yangtze River main embankments, all of which have been effectively dealt with. There are no major dangerous situations. It can be said that the middle and lower reaches of the Yangtze River and the two lakes have been in a controllable state, both in terms of flood conditions and dangerous conditions. The main risks of flood control in the entire Yangtze River basin are: first, the dikes are immersed for a long period of time at high water levels, and they are more prone to dangers such as landslides, collapses, and pipe surges. The second is long-term dikes, inspections, and emergency treatment. Under the harsh working environment such as rainstorms, the inspection personnel were exhausted and very hard.
And where is the flood control pressure in the Taihu Lake Basin?
Zhang Jiatuan, Emergency Commander of the Emergency Management Department of the National Defense Office: First, how to overcome the pressure of long-term, high-water defense. At present, the over-alarm of Taihu Lake and its surroundings (water level) has reached about 20 days. Although there have been no major dangers and disasters in Taihu and its surroundings so far, the dike is also prone to danger after prolonged immersion.
The second is how to do a good job of drainage in Taihu Lake and surrounding river network areas. Because the terrain around Taihu Lake is very gentle, the water level difference between the inner and outer rivers is relatively small, and coupled with the Yangtze River flooding, the drainage is very slow. In the future, Taihu Lake and the surrounding river network area will be in a state of super-alarm for a long time.
Seems they are coping well thus far and should be ok provided there are no big structural failures. The specific calling out of the risks of landslides and water infiltration because of the long period of high water is refreshingly honest. The message would be made to sound much more positive here, whether warranted or not.
Real shot of Wangjiaba water level of the Huaihe River exceeds the level of protection
At 8:32 on July 20, in response to the National Defense Command, the Huaihe Wangjiaba sluice in Funan County was opened to release water, and flooded to Mengwa flood storage to reduce the pressure in the Huaihe flood season. At 2 o'clock in the morning on the 20th, the water level of Wangjiaba exceeded the guaranteed water level of 29.32 meters. It is understood that there are 4 towns in Mengwa flood storage area, with nearly 200,000 inhabitants. More than 2,000 residents have been evacuated from the evening of 19th to the early morning of 20th. The rest of the people live on 131 high-level Zhuangtai and 6 Baozhuangwei . From 1954 to 2007, the Wangjiaba sluice gate was flooded 15 times, with a total of 7.5 billion cubic meters of flood storage. This is the 16th flood sluice.
Jul.20 -- At least 24 provinces across China are on high alert for record flooding as heavy rain continues to drench regions along the Yangtze River. Several provinces have seen more than 40 days of rain and flooding. Authorities say that since July, 20 million people have been affected with over 12 thousand homes destroyed.
380,000 hectares (939,000 acres) of crops destroyed.
Jul 20, 2020,08:00am EDT
China Floods Call Into Question Sustainability Of Massive Three Gorges Dam
Kenneth Rapoza
Seems to be part of the times, no? A once in a generation pandemic, a once in a generation flood. Parts of China are literally up to their eyeballs in water, in what the Chinese government is calling a once in 100 years flood. The Three Gorges Dam, built to stop these things, is now in the spotlight.
The Three Gorges Dam is the world’s largest hydroelectric power station, with an installed capacity of 22,500 megawatts of power generation. The thing is, that the power station is down the Yangtze River from a handful of other dams that exist at a higher elevation than the Three Gorges. And because of the floods and problems at those dams upstream, Three Gorges is buckling under the strain of massive flows of water.
Cities in the country's central region along the Yangtze River — China's longest river — have been flooded in the past week due to heavy rains this monsoon season. It was reported to be the worst flood since 1998, and not 100 years as some in Beijing have said.
All told, more than 400 Yangtze tributary rivers have overflowed, with nearly 200 people dead and properties underwater.
Average rainfall is around 12% higher than last monsoon season. The economic damage from flooding is expected to reach 86.2 billion yuan ($12 billion), according to some government estimates made on Friday.
On Sunday, the AP reported from Beijing that authorities blasted down an entire dam in order to release surging waters behind it and let it run.
State broadcaster CCTV reported the dam on the Chuhe River in Anhui province was blown to bits with explosives early Sunday morning, after which the water level was expected to drop by two feet...
How strong is the flood control capacity of the Three Gorges Project?
Published: 2020-07-21 09:12:16 | Source: Global Times | Author: Zhao Jue Cheng Jie single
More news into the news center
Since my country entered the flood season in early June, many places such as Jiangxi, Anhui, Hubei, Hunan, and Chongqing have been hit by floods. As in previous years when faced with floods, China's largest water conservancy project-the Three Gorges Project on the Yangtze River has once again become the focus of attention at home and abroad. What role did the Three Gorges Project play in this year’s severe floods? Did the flood discharge of the Three Gorges Dam “do not help” and aggravate the floods in the middle and lower reaches of the Yangtze River? How much flood can the Three Gorges Project play a role in flood prevention? A few days ago, a reporter from "Global Times" interviewed the relevant person in charge of the Three Gorges Group Basin Hub Management Center and responded to many hot issues.
What role did the Yangtze River flood prevention and Three Gorges play this year
Global Times: During this round of flooding in the Yangtze River Basin, what were the main tasks of the Three Gorges Project in flood control? What role did it play?
Person in charge of the Three Gorges River Basin Management Center: The Three Gorges Reservoir is used in flood control strictly in accordance with the dispatching instructions of the Ministry of Water Resources and the Yangtze River Water Resources Commission. As of the 19th, the Three Gorges Project has been used for flood control 5 times in this flood situation, and the total amount of flood interception is about 14 billion cubic meters. On July 2, 2020, the Yangtze River No. 1 flood formed in the upper reaches of the Yangtze River, with a peak flow of 53,000 cubic meters per second (appearing at 14:00 on July 2). The Three Gorges Reservoir played the role of flood blocking and peak shaving, controlling the discharge flow of 35,000 cubic meters per second, and the peak shaving rate reached 34%. According to calculations by the Yangtze River Water Resources Commission, the Three Gorges Reservoir was used alone to reduce the water level of Chenglingji by 0.2 meters, and the water level of Chenglingji was reduced by 0.8 meters through the joint operation of the upper Yangtze River water project (including the Three Gorges), avoiding Dongting Lake Chenglingji and Poyang Lake The guaranteed water level in the mouth and the warning water level in Jingjiang Shashi have greatly reduced the pressure on flood control in the middle and lower reaches of the Yangtze River.
Affected by the significant increase in water inflow from the upper reaches of the Yangtze River and the Three Gorges section, the inflow of the Three Gorges Reservoir rose to 50,000 cubic meters per second at 10 o'clock on the 17th, and the Yangtze River's second flood of 2020 was formed. At 20 o'clock on the 19th, the inflow of the Three Gorges Reservoir was 46,000 cubic meters per second, which was a drop of 15,000 cubic meters per second from the peak of 61,000 cubic meters per second in the current flood. The No. 2 flood of the Yangtze River in 2020 passed the Three Gorges Dam smoothly.
How many years can the Three Gorges Project prevent floods?
Global Times: This year’s flood reminds many people of the 1998 catastrophic flood. If this flood did not exist for the Three Gorges Project, what kind of disasters and damage would it bring?
Person in charge of the Three Gorges Group Basin Hub Management Center: In 1998, the Yangtze River was flooded by the entire river basin. The water level at Shashi Station in the most dangerous section of the Yangtze River rose to 45.22 meters, exceeding the guaranteed water level by 0.22 meters. Jingjiang River was once faced with the choice of flood diversion, millions of soldiers and civilians. The upper dike is strictly guarded, and the flood control situation is very severe. Through simulation calculations, if the Three Gorges Project had been built at that time, the water level of the Shashi station in the Jingjiang section could not exceed 44.5 meters, and the flood distribution of Chenglingji would be reduced from 10.8 billion cubic meters to 3.5 billion cubic meters. The flood control pressure on the middle and lower reaches of the Yangtze River would be reduced. Greatly relieved. If there is no Three Gorges Project this year, the Chenglingji area of Dongting Lake and the mouth of Poyang Lake will exceed the guaranteed water level, and there will be part of the flood diversion and storage division. The water level at Hankou Station in Wuhan will be higher, and the flood control situation in the middle and lower reaches of the Yangtze River will be more tense.
Global Times: There are many online opinions on the flood control capacity of the Three Gorges Dam. Some say it can withstand the once-in-10,000-year flood, and some say it can prevent the once-in-a-year flood. What is the flood control capacity of the Three Gorges?
The person in charge of the Three Gorges Group Watershed Hub Management Center: Wanli Yangtze River is dangerously located in Jingjiang. The flood control function of the Three Gorges Project is mainly in the Jingjiang River section, which can make the Jingjiang River section encounter a once-in-100-year flood without flood diversion; in case of a once-in-100-year flood to a once-in-1000-year flood, including the 1870 flood in similar history, it can Controlling the flow of Zhicheng to no more than 68,000 cubic meters per second, coupled with the cooperation of flood diversion and storage areas, can prevent devastating disasters in the Jingjiang area.
Regarding the flood control compensation dispatching method of the Jingjiang section, the focus is on preventing the catastrophic upstream flood, which is the most basic dispatching method and flood control function formulated in the preliminary design of the Three Gorges Reservoir. Later, after more than ten years of research and practice, it was proposed that the Chenglingji flood control compensation and dispatching method should be taken into consideration under the premise of ensuring the safety of the dam of the hub and not reducing the Jingjiang flood control standard.
Global Times: If the current flood situation continues, will the Three Gorges still have sufficient capacity to continue regulation?
Person in charge of the Three Gorges River Basin Hub Management Center: I need to remind everyone that the Three Gorges Project mainly intercepts the incoming water from the upper reaches of the Yangtze River, focusing on ensuring the flood control safety of the Jingjiang River section and taking into account the flood control requirements of the Chenglingji area. Through the preliminary storage, the water level of the Three Gorges Reservoir rose from 145 meters to 155 meters, and 5.6 billion cubic meters of water was stored. The flood control storage capacity of the Three Gorges is 22.15 billion cubic meters. At present, there is still nearly 17 billion cubic meters of storage space left, which has sufficient capacity to deal with the next wave of floods. The regulation and storage of the Three Gorges Project is mainly to solve the flood control problem of the mainstream of the Yangtze River. Even if the Three Gorges Reservoir discharges flood, it must not exceed the flood control compensation standard of the downstream flood control objects, and will not add additional flood control pressure to the downstream. However, if the heavy rains are concentrated below the Three Gorges Dam in the later stage, regional floods occur in the middle and lower reaches of the Yangtze River, floods occur in tributaries, or the city itself suffers serious waterlogging, the city's own drainage facilities must be used to solve the problem. However, the Three Gorges Reservoir can reduce the discharge flow by blocking upstream floods as much as possible, minimizing the water level of downstream mainstreams, helping downstream cities to drain waterlogging and disaster relief, and greatly alleviate downstream pressure.
Is there any risk of "deformation" of the Three Gorges Dam
Global Times: Every year, some overseas media hype up alarmist remarks such as the "deformation" of the Three Gorges Dam and the "risk of dam failure". What is the current safe operation status of the Three Gorges Dam? Has there been any so-called "deformation" or other risks recently?
Person in charge of the Three Gorges River Basin Hub Management Center: Currently, the Three Gorges Dam is operating in good safety. There has not been any so-called "deformation" or other risks recently, and the Three Gorges Project is not as "fragile" and vulnerable as some people think.
In order to grasp the operation status of the Three Gorges Dam in real time and accurately, the safety monitoring project, as part of the main Three Gorges project, began to bury safety monitoring instruments as early as 1994. As of the end of June 2020, more than 12,000 instruments have been installed in the Three Gorges Dam. Supports and instruments are distributed throughout all permanent buildings, foundations and slopes of the Three Gorges Project. Monitoring items include special monitoring of deformation, seepage and seepage pressure, stress and strain, strong earthquakes, hydraulics and dynamics. In addition to professional monitoring based on advanced technology and equipment, manual inspections were also carried out. Rumors such as the "deformation" of the Three Gorges Dam and the risk of "dam failure" are alarmist talkers. Any speculation without scientific and careful monitoring data is unscientific, irresponsible, layman, or even with ulterior motives.
Global Times: Some people believe that the Three Gorges Dam has continuously discharged floods this year, which has aggravated the flooding in the middle and lower reaches. How do you respond to this statement? How much does the situation in the Poyang Lake water system have to do with the flood discharge of the Three Gorges?
Person in charge of the Three Gorges River Basin Management Center: Reservoir flood discharge is only a form of discharge from the reservoir through flood discharge facilities. Generally speaking, the outflow from the reservoir is given priority to passing through the unit, and only when the outflow flow exceeds the capacity of the unit. The use of deep hole, surface hole and other flood discharge channels, but the flood discharge of the reservoir does not mean that the reservoir has not played the role of flood control. For example, at 14:00 on the 2nd of this month, the flood peak flow of the Three Gorges Reservoir reached 53,000 cubic meters per second. According to the dispatching instructions of the Yangtze River Water Resources Commission, the outflow flow of the Three Gorges Reservoir should be controlled at 35,000 cubic meters per second. At this time, the full capacity of the 34 units of the Three Gorges Power Station is about 31,000 cubic meters per second. Therefore, the remaining flow of about 4000 cubic meters per second needs to be discharged through the flood channel. Although the Three Gorges is discharging floods, the total flow out of the reservoir is 35,000 cubic meters per second, which is still smaller than the inbound flow of 53,000 cubic meters per second, and it is still playing the role of flood arrest. The flood interception of the Three Gorges Reservoir reduced the flood control pressure of Poyang Lake and prevented the Poyang Lake Hukou Station from exceeding the guaranteed water level.
Three Gorges Dam deformed but safe, say operators
Peripheral structures buckle when record flooding from western provinces puts feat of engineering to the test
by Frank Chen July 21, 2020
In a rare revelation, Beijing has admitted that its 2.4-kilometer Three Gorges Dam spanning the Yangtze River in Hubei province “deformed slightly” after record flooding.
The official Xinhua News Agency quoted the operator of the the world’s largest hydroelectric gravity dam as saying that some nonstructural, peripheral parts of the dam had buckled.
The dam was a pet project of the late Premier Li Peng and a monumental pride of the nation when it blocked and diverted Asia’s largest river in 1997.
The deformation occurred last Saturday when the flood from western provinces including Sichuan and Chongqing along the upper reaches of the Yangtze River peaked at a record-setting 61,000 cubic meters per second, according to China Three Gorges Corporation, a state-owned enterprise that manages the dam and the sprawling power plant underneath it.
The company noted that parts of the dam had “deformed slightly,” displacing some external structures, and seepage into the main outlet walls had also been reported throughout the 18 hours on Saturday and Sunday when water was discharged though its outlets.
But the problem of water seeping out did not last long, as the dam reportedly deployed floodgates to hold as much water as possible in its 39.3 billion-cubic-meter reservoir to shield the cities downstream from the biggest Yangtze deluge so far this year.
It is believed that the dam’s operator must protect the central megacity of Wuhan, whose 10 million residents are still reeling from the coronavirus pandemic that erupted there in December...
Original title: Playing cards in outposts, leaving their posts without authorization...These cadres were punished for ineffective flood control work At present, the national flood control has entered the stage of "seven lower and eight upper", and the flood control situation is very serious. Flood prevention and disaster relief work is a major matter related to the safety of people's lives and property and the vital interests of the people. Facing the severe flood control situation, the disciplinary inspection and supervision agencies throughout the country have performed their duties of supervision, discipline and accountability in recent days, and seriously investigated and dealt with problems such as impossibility, prohibition, resignation and perfunctory responsibilities in flood control and disaster relief work. Discipline provides a strong guarantee for flood prevention and disaster relief. People's Daily Online and the Chinese Communist Party News Network sorted out the typical flood prevention and disaster relief cases reported in many places recently, sounding the alarm for the majority of cadres. Reservoir weeds were not removed in time, 8 cadres in Daye, Hubei were dealt with On June 12, the Flood Control Supervision Team of Daye City, Hubei Province inspected the flood control work of Dongjiakou Reservoir in Yinzu Town, and found that the daily management and protection of the reservoir was not in place, and a large area of weeds on the slope outside the dam was not removed in time, affecting the dam body inspection In order to eliminate the risks, the problem feedback was carried out, and effective measures were required to promptly weeding. On July 6, when the inspection team inspected the flood control work of the reservoir again, it was found that there was still a large area of high-growing weeds on the outer slope of the dam. On July 8, the Municipal Commission for Discipline Inspection investigated and dealt with the delay in rectification and rectification of the Dongjiakou Reservoir in Yinzu Town’s negligence, supervision and feedback. After research, it was decided to give the Yinzu Town Party Committee Secretary and Dongjiakou Reservoir administrative person Ke Hongyun, etc. 8 People criticized education and other punishments. The flood control posts "bring color" to play cards, and several responsible persons in Songzi, Hubei were dealt with On July 4th, Yang, the person in charge of the flood control team in Weijiadi Village, Huanshi Town, Songzi City, Hubei Province, and Jin Mou and Zhang Mouqing on duty were playing card games in the outpost; Dahu Township of the Paper Factory Four people, including Yang Mouyan, Yang Moufan, Yang Mouhua, and Deng Moubing, were playing cards at the outpost. Liu Mousong, deputy director of the village committee, did not stop it. In order to strictly enforce flood control disciplines, the Municipal Commission for Discipline Inspection instructed the Municipal Commission for Discipline Inspection to review Yang’s case, and interviewed Xu Mouyun, secretary of the village Party branch and village committee director; Admonishment conversations were dealt with, and the Zhichanghe Police Station was instructed to conduct admonishment conversations with the 4 people who participated in the card game. The whole town notified the criticism and ordered a written review. Insufficient implementation of flood control, 23 responsible persons in Changde, Hunan were dealt with On July 5, affected by heavy rainfall and flood discharge from the upper reaches of Yuan River, two hydrological monitoring stations in Zhoukou Town, Hanshou County, Changde City, Hunan Province exceeded the warning water level. The Municipal Flood Control and Drought Relief Headquarters required the town to carry out inspections and defenses on the embankment and complete the cutting. Flood prevention work such as grass cleaning, ditch cleaning, lighting installation, etc. However, five days later, there were still unfulfilled work problems in many villages in the town, causing major safety hazards to flood control. In this regard, the Commission for Discipline Inspection of Hanshou County quickly launched an investigation. On July 12, the Commission for Discipline Inspection of Hanshou County issued a warning to Liu, the chairman of the town’s people’s congress who was in charge of water conservancy work, and gave admonishment to Chen, the secretary of the town’s party committee. There were 5 flood dike section leaders and 4 responsible units. The person in charge and the 12 village party branch secretaries were interviewed and dealt with. During the defense of the river embankment, a cadre from Anqing, Anhui, was punished and publicly exposed On July 12, the Commission for Discipline Inspection of Yingjiang District, Anqing City, Anhui Province discovered during the inspection that a member of a unit team violated the work and disciplinary requirements of the district flood control and drought relief headquarters during the period when they were responsible for the leadership of the river bank defense. Leave without authorization and leave Anqing to go out. The Commission for Discipline Inspection of Yingjiang District quickly initiated an investigation and dealt with it seriously. On July 12, the Commission for Discipline Inspection of the District Convened the Standing Committee of the Discipline Inspection Commission to make a decision to remove the comrade’s position within the party. The political group, the district party committee government portal website, the district discipline inspection committee website and today’s headlines publicly announced the exposure, requesting party organizations at all levels to take the case as a typical case, take the case as a warning, use the case as a warning, and use the case to promote reform, forming a strong warning effect. Conduct responsibility pressure. The transfer of the masses is not in place, etc., and a directly responsible person and related leaders in Jiujiang, Jiangxi are dealt with On July 14, the Commission for Discipline Inspection and Supervision of Duchang County, Jiujiang City, Jiangxi Province publicly notified a serious problem of flood fighting and rescue work: Jiushan Village Committee of Zuoli Town, Duchang County did not work well in the process of transferring people, and it has been reported to the transferred people Among them, 2 households were not transferred in place, and the gates of the village-level centralized resettlement sites were locked and unoccupied; the data was falsely reported and the 9 households who were uninhabited and migrant workers were included in the transfer form and reported... Direct responsibility was given a warning within the party; Dong Shuping, vice chairman of the town’s People’s Congress, and Zhao Yong, secretary of the village party branch, were responsible for leadership and were exhorted to talk and deal with them. Flood prevention responsibilities are not implemented in place, the "top leaders" of 4 units in Huaihua, Hunan are reminded to talk Recently, the Commission for Discipline Inspection of Mayang County, Huaihua City, Hunan Province uses 6 districts as the basic unit and is coordinated by the Party’s Work Style Supervision Office. Each dispatched to the Discipline Inspection and Supervision Team and the Township Discipline Inspection Commission area as a whole to coordinate flood control in 18 townships and related functional departments. The implementation of responsibilities, on-duty and other situations were supervised, and it was discovered that there were still some problems in the implementation of flood control work, and the county commission for discipline inspection took serious actions. Since the flood season, the county has conducted reminder talks to the "top leaders" of 4 units, and a total of 8 people have been accountable. >>>Extended reading<<< How to be held accountable for dereliction of duty in flood prevention work? According to the relevant provisions of the Flood Control Law of the People’s Republic of China and the Flood Control Regulations of the People’s Republic of China, anyone who commits one of the following acts will be held accountable to varying degrees depending on the circumstances and the consequences of the harm. If a crime is constituted, criminal responsibility shall be investigated in accordance with the law. (1) Refusal to implement the approved flood prevention plan or flood dispatch plan, or refuse to implement the flood prevention dispatch plan or flood control emergency instructions of the flood control command agency with jurisdiction; (2) Dereliction of duty, or escaping at a critical moment of flood control; (3) Illegal piers break the dike or open the gate; (4) Misappropriating, stealing or embezzling flood control and disaster relief funds or materials; (5) Obstructing the staff of the flood control command organization from performing their official duties according to law; (6) Other hazards to flood prevention and rescue work.
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