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Facing heavy rainfall|Pre-arranging in advance, vacating the lake capacity, accurate and scientific scheduling to ensure safe flooding

author:Jiang Han style

Jiang Hanfeng reported: Since the beginning of Meimei on June 18, Jingzhou has experienced two consecutive super rainfalls, and heavy rains have fallen in Honghu City, Jianli City and other places, causing the water level of Neiyuan River and Lake to rise sharply, and the situation of flood control and drainage is grim. The leaders of Jingzhou City's defense command sat in command and personally deployed, and the water conservancy department and emergency response, meteorological and other departments planned in advance, adjusted and stored in a timely manner, and made every effort to rush to ensure the safety of the rivers and the safety of the people.

Facing heavy rainfall|Pre-arranging in advance, vacating the lake capacity, accurate and scientific scheduling to ensure safe flooding

The torrent is rolling, galloping and roaring. At noon on June 29, when the rainstorm first stopped, at the flood control gate of Jianli Futian Temple, the turbulent water flowed through the six gates and flowed into Honghu Lake. As the "throat gate" of the four lakes basin, the flood control gate of Futian Temple undertakes the flood control and drainage tasks of Jingmen, Qianjiang, Jingzhou, Jiangling, Jianli, Honghu and other 7 counties and cities, benefiting an area of 4,500 square kilometers, since the heavy rainfall on June 18, the flood control gate of Futian Temple has been opened 18 times.

Yan Jianjun, deputy director of the Third Gate Management Branch of the Honghu Sub-Flood Storage Area Engineering Administration Bureau in Hubei Province, said that at 11 p.m. on June 28, the flood control gate was opened to a maximum of 4.9 meters, and the flow rate reached 724 cubic meters per second, which is equivalent to 724 tons of water passing through the gate per second. According to the upstream rainfall collection speed, the water level in front of the gate will continue to rise, the staff pay close attention to the operation of the gate, strengthen the inspection and defense, eliminate hidden dangers in time, and ensure the safe operation of the gate.

Facing heavy rainfall|Pre-arranging in advance, vacating the lake capacity, accurate and scientific scheduling to ensure safe flooding

Listen to the order and act. In the central control room of the city's major pumping stations, the operation information of the pumping station, the performance of the pump, and the current flow rate are continuously transmitted to the centralized control system, and the staff is on duty 24 hours a day to monitor. Nine Waijiang drainage pumping stations in Honghu and Jianli were started at 1,046 cubic meters per second, and seven backbone culverts along the lake were opened in time to discharge floodwater to Honghu Lake with a flow rate of nearly 900 cubic meters per second.

Xiong Wenting, head of the construction management office of the expansion project of the semi-embankment pumping station in Jianzhou City, introduced that according to the precise scheduling of the Municipal Prevention Office, the three shifts are running 24 hours a day, and the flow rate of 150 cubic meters per second is rushing to drain the water, and since June 21, it has accumulated 598 units of operation, and the drainage is about 62 million cubic meters.

Wei Shaoxiong, director of the Waist Water Conservancy Project Management Institute of the Jingzhou Four Lakes Engineering Administration, said that at eight o'clock that night, all three units were started. Up to now, 539 units have been operated, with a total displacement of 67.54 million cubic meters.

Tang Jinxiang, deputy director of the Gaotankou Water Conservancy Project Management Office of Jingzhou City, introduced that the first and second stations of the Gaotankou pumping station are running at full capacity, and now the first station is six units, and the second station is three units, which can discharge all the water of 498,800 mu of farmland within three days.

Facing heavy rainfall|Pre-arranging in advance, vacating the lake capacity, accurate and scientific scheduling to ensure safe flooding

Since April 16 this year, Jingzhou has opened Luoshan and Gaotankou pumping stations to implement zonal drainage in combination with the ecological dispatch of Honghu Lake, and continued to lower and control the water level of Honghu Lake. On June 17, the water level dropped to 23.93 meters, the lowest value in the same period in history, and the lake capacity was vacated by more than 400 million cubic meters ahead of schedule, creating strong conditions for facing the Meiyu flood.

Huang Zehua, deputy director of the Jingzhou Municipal Water Conservancy and Lake Bureau, said that since June 27, the second round of heavy rainfall in the four lakes basin of Jingzhou has occurred again, and the Municipal Prevention Office quickly opened the culvert gates along the lake to discharge floodwater to Honghu Lake to reduce the pressure on farmland drainage. According to statistics, since the beginning of the two rounds of heavy rainfall, the peak of the lake storage flow of 1,150 cubic meters per second, the water level of Honghu Lake rose from 23.93 meters to 25.40 meters, 0.40 meters lower than the water level, a total of 588 million cubic meters through Honghu Lake.

Facing heavy rainfall|Pre-arranging in advance, vacating the lake capacity, accurate and scientific scheduling to ensure safe flooding

The word "pre" comes first, and the word "prevention" is essential. Since the occurrence of heavy rainfall, the Jingzhou Municipal Party Committee and Municipal Government have attached great importance to scientific scheduling, consultation, research and judgment, and accurate forecasting. Clear dispatching instructions were issued, and bold and concise feedback was sent back: pay close attention to the changes in water conditions, rain conditions and flood conditions, make every effort to start the machine to drain the remaining water in the farmland, and timely dispatch and close the discharge culvert gate to retain the storage capacity of the lake...... Use actions to protect one side of Anlan and build a causeway that will not collapse in the wind and rain.

Huang Zehua, deputy director of the Jingzhou Municipal Water Conservancy and Lake Bureau, said that in recent years, with the strong support of the Hubei Provincial Department of Water Resources, a large number of water conservancy projects in Jingzhou have been completed to improve the shortcomings of water conservancy and flood drainage capacity building projects. Since the beginning of this year, although Jingzhou has experienced a rare over-standard rainstorm and flood, after scientific command and careful scheduling, there has been no major disaster under the flood. According to statistics, since the beginning of Meimei, a total of 26 machines have been started in Jingzhou, with a total of 1.9 billion cubic meters of water discharge, ensuring the safety of farmland flood control and drainage.

(Reporter: Tian Xinyi, Chen Xiaowu/Editor: Lv Jingyi/First Instance: Tang Jie/Second Instance: Wang Taofang/Third Instance: Jiang Min)

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