摘要
根据三峡水库蓄水后宜昌-城陵矶河段水沙、河道冲淤等实测资料,分析了宜昌-城陵矶河段内水位变化的整体分布状况及其随时间的发展历程与成因.结果表明,该河段水位降幅以枝江-监利为中心,呈现"中间大,两头小"的规律,在水位下降的发展历程上表现为沙市水位最先下降,而后下降趋势向上游、下游双向传递.宜昌-枝江河段水位变化受局部卡口作用的控制;枝江-监利河段水位变化是由沙市上游溯源冲刷和沙市下游沿程冲刷同时发展引起的;监利以下河段水位变化主要受下游水位的控制.
Based on the field data of water and sediment and river erosion,the overall of water level and its course of development over time from Yichang to Chenglingji was analyzed.The research results show that the water level decline in Zhijiang-Jianli reach as the center,showing two poles are small while those middle are big.In the course of development of water level,the decline in Shashi was earlier than other reach,which lead to the descend of upstream and downstream reach.The small changes in Yichang-Zhijiang reach was due to the bottle-neck reach＇s control action.The development of river fall in Zhijiang-Jianli is inconsistency by the retrogressive erosion and along erosion commonly taken place.The water level of downstream of Shishou is mainly controlled by the downstream water level.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2011年第6期685-690,695,共7页
Engineering Journal of Wuhan University
基金
国家973项目(编号:2010CB429002)
关键词
三峡水库
宜昌-城陵矶河段
枯水位变化
Three Gorges Reservoir
Yichang-Chenglingji reach
low water level changes
