Beijing, August 8 (Reporter Chen Shu) The reporter learned from China's Ministry of Water Resources on the 15th that affected by heavy rainfall, as of August 15, a total of 8 rivers in the Songliao River Basin had floods above the alarm, of which 13 rivers had over-protected floods and 90 rivers had over-historical floods. The Songliao Water Conservancy Committee of the Ministry of Water Resources (hereinafter referred to as the "Songliao Committee") pays close attention to the process of flood evolution, encrypts the frequency of consultations, strengthens rainwater forecasting, scientifically schedules water projects, and promptly dispatches working groups to the front line to carry out various flood prevention work in a powerful, orderly and effective manner.
Continuous rolling consultations Careful deployment of flood defenses
Since August, Northeast China has suffered continuous heavy rainfall, and under the guidance of the Ministry of Water Resources, the Songliao Committee has insisted on meeting at least twice a day to study and deploy various preventive and response work basin by basin, river by river and region by region. As of August 8, a total of 8 flood control meetings have been held and 13 emergency response has been initiated.
The Heilongjiang Provincial Working Group of the Songliao Committee held a meeting on flood prevention of the Ant River in Shangzhi City, Harbin City, Courtesy of the Songliao Committee of the Ministry of Water Resources
"It is necessary to improve the political position, further strengthen the awareness of risks, establish a solid bottom-line thinking and limit thinking, pay close attention to key rivers and key areas such as the Lalin River and the Ant River, take more powerful and effective measures, and make every effort to do a good job in flood prevention in the Songliao River Basin." Qi Yuliang, director of the Songliao Committee, stressed during the meeting.
Since the beginning of the flood, the Hydrological Bureau of Songliao Committee has closely monitored the rainwater situation, carried out hydrometeorological forecasting on a rolling basis, and actively held rolling consultations with the hydrological departments of Heilongjiang, Jilin, Liaoning and Inner Mongolia to analyze and judge the precipitation falling area, precipitation level and flood evolution trend of typhoons No. 5 and No. 6, and finally formed a forecast conclusion.
In the process of fighting the flood, the Hydrological Bureau of Songliao Committee strengthened the overall management, integration, aggregation and sharing of various water-related information resources, iteratively updated the business data services and base maps of the "Water Conservancy Map" of Songliao Committee, gave full play to the information support and guarantee role of panoramic images, captured the dangerous location of the Ant River flood and the optical satellite images and SAR satellite images of Mopanshan and Longfengshan Reservoir, so as to provide data support for real-time analysis and judgment of floods.
The duty officer of the Songliao Committee Water and Drought Disaster Prevention Department is analyzing the flooding situation of the Lalin River and the Ant River against the remote sensing interpretation information Photo provided by the Songliao Committee of the Ministry of Water Resources
From August 8 to 1, the Hydrological Bureau of the Songliao Committee consulted with relevant water and meteorological departments more than 13 times, carried out more than 30 flood forecasts, more than 700 precipitation forecasts, and released more than 310,5000 pieces of rainwater information, providing a timely decision-making basis for flood prevention and control.
Give play to the benefits of backbone projects and scientifically carry out reservoir flood control and dispatch
There are 107 large reservoirs in the Songliao River Basin with a capacity of 138.<> billion cubic meters, which play an important role in the flood control system of the basin. The Songliao Committee pays close attention to the flood control and dispatch of backbone reservoirs and large and medium-sized reservoirs in areas where heavy rainfall falls, comprehensively considers the flood control situation in the upstream and downstream of the reservoir and the current situation of water projects, scientifically guides the pre-discharge of the reservoir to meet the flood, gives full play to the role of the backbone project in flood control and peak cutting, and reminds the local government to take effective measures at critical times to reduce the reservoir water level as soon as possible to ensure the safety of the dam.
Zuo Haiyang, director of the Flood and Drought Disaster Prevention Division of the Songliao Committee, said: "We insist on scientific dispatch of reservoirs, pre-discharge reservoirs before rain, flood prevention and peak cutting in rain, give full play to the benefits of flood prevention and disaster reduction of reservoirs, and implement safety measures for reservoirs that are being strengthened to eliminate risks, and in principle, all reservoirs with dangerous diseases are operated empty." ”
At 8:10 on August 20, the total outflow of the Charsen Reservoir was changed from 100 cubic meters per second to the full flow of the unit (60 cubic meters per second) to reduce the flood control pressure of the main streams of the Taoer River and the Songhua River. Since 8:9 p.m. on August 14, the total outflow of the Nilki Reservoir has been reduced to 150 cubic meters per second to reduce the flood control pressure of the main stream of the Yihua River. Since 8 o'clock on August 9, the outflow of Baishan Reservoir has been increased to 8 cubic meters per second, and the outflow of Fengman Reservoir has been increased to 400,1100 cubic meters per second.
Through scientific and accurate scheduling, the flood control role of the backbone reservoir in the Songliao River Basin has been fully utilized. As of August 8, the Songliao Committee had issued dispatch orders three times, timely adjusted the outflow of four directly transferred reservoirs, including Charsen, Nilki, Fengman, and Baishan, scientifically guided the backbone reservoirs such as Mopanshan, Longfengshan, Laolongkou and Yunfeng, and accumulated 9.3 billion cubic meters of floodwaters, reduced flooding 4 towns, reduced flooding of 27.8 million mu of cultivated land downstream, and avoided the transfer of 118,188 people.
At the same time, the Songliao Committee dispatched six additional unannounced inspection teams to focus on comprehensive inspections of small and medium-sized reservoirs and dangerous reservoirs within the scope of heavy rainfall to minimize hidden risks.
Timely dispatch of working groups to guide localities in doing a good job in flood control
From August 8 to 4, the two large reservoirs in Mopanshan and Longfengshan in Heilongjiang Province exceeded the design flood level, and the water level remained high, and the situation was very serious. The Songliao Committee organized a special meeting to study and judge the risk trend of the two reservoirs, and quickly sent a working group and relevant experts to the scene to formulate extraordinary measures to protect the dam, and urgently carried out emergency dispatch of the reservoirs, and finally the two reservoirs turned into safety.
Since August 8, the Songliao Committee has sent a total of 1 working groups to the Yalu River, Lalin River, Ant River, Mudanjiang, Ussuri River, Tumen River, Suifen River, Yalu River, Huntai River, Second Songhua River and other river basins to guide local governments in carrying out flood control and dispatch of large reservoirs, dike inspection and defense, flash flood disaster prevention, personnel transfer and avoidance.
Songliao Committee Heilongjiang Lalin River Working Group in Harbin City Shuangcheng District Duokudian embankment section to guide flood prevention and rescue Photo courtesy of Songliao Committee of the Ministry of Water Resources
All working groups pay close attention to key parts such as reservoir dams, flood discharge facilities, and dangerous sections of embankments, as well as key areas such as small and medium-sized rivers and flash flood disaster-prone areas, do not miss a single detail, do not miss a hidden danger, insist on taking one step more, ask more questions, take more looks, hold on-site consultations with reservoir management units and local water conservancy departments on each specific problem, and put forward scientific guidance to provide strong technical support for flood prevention work in relevant places.
As of August 8, three other Songliao Committee working groups continued to guide local areas in the Huntaihe, Yalu River, Second Songhua River and other places to carry out heavy rainfall prevention and response work.
At present, the flood prevention work in the Songliao River Basin is still in a critical period, and the Songliao Committee said that it will discuss and judge the situation on a rolling basis, strengthen the monitoring and analysis of rainwater conditions, scientifically and accurately carry out the flood control and dispatch of backbone reservoirs, select a working group to go deep into the front line to pay close attention to implementation, and take multiple measures to do a good job in flood prevention work in a strict and down-to-earth manner. (End)