泥沙研究2026，Vol.51Issue(3)：33-40,8.DOI:10.16239/j.cnki.0468-155x.2026.03.005
乌东德水库蓄水前后泥沙冲淤特性分析
Characteristics of scouring and siltation before and after the impoundment of Wudongde Reservoir
摘要
Abstract
Based on the measurements of cross-section in the Wudongde Reservoir between 2013 and 2023,this study analyzes the evolution of the characteristics of river channel erosion and sedimentation in different periods.The results indicate that during the natural period,influenced by sediment trapping effects of reser-voirs in the middle reaches of the Jinsha River and the Yalongjiang River,the main river channel is in slight e-rosion overall and can be spatially characterized by"upstream erosion and downstream sedimentation"During the construction phase,the spatial distribution pattern of"upstream erosion and downstream sedimentation"remains unchanged,but the river channel exhibits overall slight sedimentation.During the reservoir operation phase,a total of 55.836 million m3 of sediment has been deposited in the main and tributary channels,which resulting in a sedimentation loss of 0.95％of the dead storage capacity and an encroachment of 0.21％of the regulation storage capacity.The reservoir sedimentation can be characterized by"larger in the middle and smal-ler at both ends in longitudinal",and primarily deposition is in the dead storage capacity in vertical.Influenced by upstream sediment influx and backflow from the main stream,the Longchuan River estuary experiences the most significant sedimentation among tributary mouths,with the average deposition of 2.6 m in the estuary sec-tions.The Yalong River is in slight erosion with the average erosion of 0.1 m in the estuary sections.关键词
乌东德水电站/冲淤量/淤积时空分布/剖面调整/金沙江下游Key words
Wudongde Hydropower Station/scouring and siltation/spatial and temporal distribution of sedimen-tation/profile adjustment/Lower Jinsha River分类
建筑与水利引用本文复制引用
路子岩,邓安军,董先勇,冯志毅,杜泽东,唐尧,吕瑞茹..乌东德水库蓄水前后泥沙冲淤特性分析[J].泥沙研究,2026,51(3):33-40,8.基金项目
国家自然科学基金项目(U2040217,U2340223) （U2040217,U2340223）
