China News Service, Wuhan, May 11 (Zhu Junjun, Xu Jinbo) In order to defend against possible major floods in the Yangtze River Basin this year, the upper reaches of the Yangtze River Basin are carefully organized by the Yangtze River Defence General Manager and the Yangtze River Water Resources Commission ("Yangtze River Commission"). Now, the storage capacity is continuing to evacuate.
According to Ma Jianhua, deputy chief commander of the General Manager of the Yangtze River Defence and Director of the Yangtze River Committee, this year, under the leadership of the Ministry of Water Resources, the Yangtze River Defence General Committee and the Yangtze River Committee have carefully organized the scheduling of the upstream reservoir group with the Three Gorges Reservoir as the core. Under the premise of taking into account the needs of downstream water supply, ecology, power generation, shipping and the stability of the reservoir bank, implement water supply scheduling for the downstream.
Through the strengthening of joint operation, the comprehensive benefits of the controlled reservoirs in the Yangtze River Basin during the dry season have been brought into full play, and the pre-flooding of the reservoirs has entered the station smoothly, effectively ensuring the safety of water supply in the dry season watershed, and significantly improving the shipping conditions during the dry season. The benefits of power generation and shipping are remarkable.
Especially during the prevention and control of the New Coronary Pneumonia epidemic, the Yangtze River Commission closely linked with the shipping department and the State Grid, comprehensively considering the hydrological situation in the middle and lower reaches of the dry season, water supply along the river, power dispatching and shipping dispatching needs. 7000 cubic meters per second or more.
Affected by the water supply scheduling of the Three Gorges Project and upstream reservoir groups, the average flow from Yichang Station in January to April in 2020 was 8240, 7350, 9790, and 9590 cubic meters per second, respectively, and the average for many years was 69%, 61%, and 90% 33%, the water level of the main stream in the middle and lower reaches is raised by 0.5 to 1.9 meters, which effectively guarantees the safety of water supply, power supply and shipping during the dry season in the middle and lower reaches of the Yangtze River during epidemic prevention and control.
Statistics show that from November 2019 to April 2020, 40 controlled reservoirs in the Yangtze River Basin made up 42.8 billion cubic meters of water, of which 21 controlled reservoirs in the upper reaches of the Yangtze River made up 33.3 billion cubic meters.
In addition, the Yangtze River Commission also combined with the decline of the Three Gorges Reservoir, seized the opportunity, and arranged for the first time the deployment of ecological breeding experiments for the natural breeding of viscous spawning fish in the Three Gorges Reservoir area. experiment.
As of 8:00 on the 9th, of the 40 reservoirs in the Yangtze River Basin that were included in the joint operation, 29 have fallen below the flood limit. The remaining 11 reservoirs have a capacity of 8.7 billion cubic meters, and are falling in an orderly manner as planned. At present, the storage capacity to be dissipated is the smallest since the same period in 2014. Among them, the 5.6 billion cubic meters of the Three Gorges Reservoir will be dissipated in place by June 10, and 22.1 billion cubic meters of flood control storage capacity will be vacated, which will protect against possible occurrences this year. The great flood laid a solid foundation. (Finish)