Studies on flood control operation of the Three Gorges Project and its functions/

Chen Guiya; Zhang Jun; Zou Qiang

doi:10.3969/j.issn.1000-1123.2024.22.009

Abstract：Frequent occurrence and recurrence of flood and waterlogging disasters in the Yangtze River have seriously affected the high-quality economic and social development of the basin,and have always been a concern for the Chinese nation.The Three Gorges Project,as a backbone for flood control,plays an important role in the middle and lower reaches of the Yangtze River.Since its completion in 2003,the Changjiang Water Resources Commission of the Ministry of Water Resources has conducted in-depth research on flood control operation of the Three Gorges Project and methods of scheduling which have been optimized and played a key role in the prevention of major floods in recent years.By reviewing the research process including scheduling system and latest policy documents such as the"Preliminary Design Report of the Three Gorges Multi-purpose Dam Project(Dam Project)","Three Gorges Reservoir Optimization Scheduling Plan","Three Gorges(Normal Operation Period)-Gezhouba Dam Cascade Scheduling Regulations",and"Three Gorges(Normal Operation Period)-Gezhouba Dam Cascade Scheduling Regulations(Revised in 2019)",typical floods with different features in 2016,2017,2020,2024 were selected to analyze function of the Three Gorges Reservoir by scheduling under different situations and purposes.Measures to strengthen flood control for the Chenglingji River section by the Three Gorges Reservoir were proposed.Suggestions are made to study on real time forecasting and scheduling methodologies,joint operation of flood control storage capacities of reservoirs,application of reservoir group scheduling based on medium and long-term forecasting,and leveraging role of the Yangtze River reservoir group for flood control.