China News Service, Yiyang, August 3rd, title: High water level "extra-long standby" Why does Dongting Lake protect Anlan?

  Author Fu Jingyi

  Since July, the Yangtze River has set off three "big waves", causing the water level of Dongting Lake, China's second largest freshwater lake, to rise, and the water level continues to be over-alert and even over-guaranteed. The time is long, the front line is wide, and the impact is great, far exceeding the same period in history. As of August 3, the hydrological "barometer" of Dongting Lake and the Yangtze River Basin, Chenglingji Hydrological Station, had been over the police for 30 days.

  As one of China's main battlefields against floods, the Dongting Lake area had nearly 2,900 kilometers of embankment water level exceeding the alarm during this year's flood season, of which 250 kilometers were beyond the guarantee. Under the high flood level, the sandy soil of the Dongting Lake embankment is prone to seepage, and then seepage, piping and other dangers occur, causing the ground and the embankment to collapse and collapse. How to fight this protracted flood control war and protect Dongting Anlan?

Data map: The "Dongting Lake" stele is overflowing from the lake. Photo by Yang Huafeng

  Party committees and governments at all levels in Hunan attach great importance to flood prevention and disaster relief work. From flood preparation to disaster relief, Du Jiahao, Secretary of the Provincial Party Committee, and Xu Dazhe, Governor of the Provincial Party Committee, have held meetings to study and deploy several times, give instructions and make specific requirements, and rush to the front line for inspection and supervision. . The main leaders of the party committees and governments in various places stick to the front line and command forward, leading the people to build a strong battle fortress to overcome floods.

  At 0:00 on July 23, a major hazard of trachoma and flowing soil occurred in a dam in Langbahu Town, Nanxian County. More than a thousand people including forest fire fighting, public security, and flood control emergency were assembled within an hour. Water conservancy experts deployed rescue plans on site, consuming yellow sand and gravel. With 8,000 tons and 30,000 woven bags, the dangerous situation was dealt with overnight.

  "Major hazards often develop from a small trachoma and small piping. It is very important to find out and deal with it quickly." Yin Fuqiu, deputy commander of the Flood Control and Drought Relief Command Post in Langbahu Town, Nan County, who has been engaged in flood control for nearly 30 years, said. After reaching the warning water level, all the reserve sand and pebbles have all been boarded on the ship and vehicle for rapid dispatch.

  In addition to timely handling of dangers, dike inspections are also an important part of flood prevention. Since the embankment in the Dongting Lake area entered the super-warning water level, tens of thousands of cadres and people have divided into countless patrol teams on the flood-fighting front that stretches for thousands of miles, using hundreds of meters as a section of responsibility. Among them, all water conservancy technicians are stationed on the front line.

Data map: Veterans inspected and eliminated risks to ensure the safety of the first-line flood control levee of Dongting Lake. Photo by China News Agency reporter Yang Huafeng

  "Within 150 meters of the levee, drag-net inspections are conducted twice a day. Rice fields, woods, and ponds are not allowed to pass." On the levee of East Dongting Lake in Datong Lake District, Yiyang, 70-year-old veteran Tan Genyun has stood firm. For 25 days. "When the flood control manpower is insufficient, many people will take the initiative to ask for the embankment. This is the obligation of the people in the lake area."

  Prolonged high pressure and strict adherence will inevitably lead to tired and lax thoughts. Many places in the lake area have also innovated incentive measures and formulated measures to mobilize social forces to participate in the risk investigation based on the farther the distance from the embankment is found and the higher the bonus. At the same time, with the help of inspection and supervision, timely notification of criticism and even accountability of typical problems that violate the discipline of flood prevention and disaster relief work.

  “Giving full play to the role of water engineering in blocking floods and peak shifts is also the basis for a long-term flood prevention and disaster relief battle.” Luo Yijun, deputy director of the Hunan Provincial Water Resources Department, said that from July 17 to 24, Hunan scientifically dispatched water projects to reduce The flood volume into Dongting Lake was 2.68 billion cubic meters, which was equivalent to the flood volume of Dongting Lake rising by one meter at that time.

  At that time, the Meteorological Department predicted that Hunan would suffer a new round of heavy rains on the evening of the 17th. Considering that the Three Gorges Reservoir would continue to increase its discharge, Hunan’s comprehensive scientific and detailed dispatch of Wuqiangxi and Fengtan Reservoirs to reduce its discharge, Jiangya and Zaobao The city and Zexi Reservoir all closed their gates to jointly store the upstream floods and guarantee the flood control safety of Dongting Lake to the greatest extent.

  Similarly, when the Yangtze River encountered three numbered floods, the Yangtze River Water Conservancy Commission dispatched more than 30 controlled reservoirs in the upper and middle reaches of which accumulated over 30 billion cubic meters of floodwater, successfully staggering the flood peaks of Dongting Lake and avoiding the use of flood storage and detention areas near Dongting Lake and Poyang Lake The mouth of the lake exceeds the guaranteed water level, which greatly reduces the pressure on flood control in the middle and lower reaches of the Yangtze River.

  At present, the precipitation in the middle and lower reaches of the Yangtze River is gradually disappearing, and the water level of Dongting Lake is slowly falling. As of 9 o'clock on the 3rd, 12 hydrological stations around Dongting Lake have exceeded the warning water level. Some stations in West Dongting have been out of warning, and the main control stations in the lake area are gradually falling back to the vicinity of the warning in the order of west-south-east.

  "If Dongting doesn't withdraw from the police, we can't slack off the assembly line." Yin Fuqiu said, we can't relax our vigilance when the water recedes, and we must strictly guard against risks such as flooding and levee slipping. (Finish)