中国农村水利水电Issue(3)：1-6,12,7.DOI:10.12396/znsd.2500789
三峡水库汛期划分与运行水位动态控制研究
Flood Seasonal Division and Dynamic Control of Water Level for Three Gorges Reservoir
摘要
Abstract
After the operation of Lianghekou,Wudongde,and Baihetan Reservoirs in the upper Yangtze River,the inflow discharge and sediment of Three Gorges Reservoir(TGR)has significant changed.As a result,the current operation scheme of TGR can no longer meet the new demands.Based on rainfall data from the upper Yangtze River basin(1961-2022)and flow data from the Yichang Hydrological Station(1882-2022),the flood season is divided by using several mathematical statistical methods.Furthermore,the temporal evolution patterns of Meiyu in the middle and lower reaches of the Yangtze River and the Autumn Rain in west China is analyzed,the TGR observed and restored inflow peak discharges and flood volumes are compared,and the necessity and feasibility of dynamically adjusting seasonal division and operational water levels are also discussed.The main flood season of the TGR is determined to be from June 21 to September 10 based on statistical analysis of rainfall and flow data series.The Meiyu is mainly occurred in late June and July,while the Autumn Rain begins in late August.Most reservoirs in the upper Yangtze River enter the refill period and TGR inflow peak discharges are reduced significantly.In summary,it is suggested to divide the TGR flood season into four periods:i.e.,drawdown period(May 1-June 20),Meiyu flood period(June 21-July 31),transition period(Aug.1-Sept.10),and Autumn Rain refill period(Sept.11-Oct.31).In practical operation scheduling,the phased transition points can be determined based on the forecasted dates of Meiyu onset and retreat.Following the Meiyu retreat,the flood control capacity reserved by the TGR may be gradually released,allowing a controlled rise in operational water levels.During the Autumn Rain period in West China,opportunities should be seized to initiate early impoundment.Dynamic control of operational water levels is implemented based on 1～5 day flood forecasting processes,balancing flood-drought mitigation and efficient water resource utilization.This integrated approach significantly enhances the comprehensive benefits of the Three Gorges Reservoir.关键词
三峡水库/汛期划分/运行水位/动态控制/梅雨/华西秋雨Key words
Three Gorges Reservoir(TGR)/flood season division/operation water level/dynamic control/Meiyu/Autumn Rain分类
建筑与水利引用本文复制引用
汪肖雅,郭生练,王孟悦,王小君,梁志明,李娜..三峡水库汛期划分与运行水位动态控制研究[J].中国农村水利水电,2026,(3):1-6,12,7.基金项目
中国长江电力股份公司资助项目(Z242402005) （Z242402005）
国家自然科学基金长江联合基金资助项目(U2340205). （U2340205）
