泥沙研究Issue(6)：52-57,6.
宜昌至杨家脑河段初期冲刷发展过程与趋势的分析
Analysis of initial erosion process and trend of river channel from Yichang to Yangjianao downstream Three Gorges Project
摘要
Abstract
Because of storing water and holding sediment by the Three Gorges Project, the downstream river channel is eroded, which influences the flood control, navigation and water intaking along the downstream channel. Based on the field data of the river channel from Yichang to Yangjianao downstream the Three Gorges Project, the erosion process and trend of the reach are investigated. The results indicate that the erosion in the Yichang to Yangjianao reach follows the general rule in which the erosion develops from upstream to downstream. The single straight reaches are more stable than the braided ones, namely the erosion mainly concentrated in the braided reaches. In the present incoming runoff conditions, the Yichang reach has gradually become equilibrium, the Yidu reach is in a period of intense erosion, and the Zhijiang reach is close to the intense erosion. In the future, the Yichang reach will still be in erosion with a small scale, and the Yidu reach will keep intense erosion before equilibrium, while the Zhijiang reach will gradually step into intense erosion.关键词
枢纽下游/冲刷特点/发展过程/趋势分析/三峡工程Key words
river channel downstream hydroproject/ erosion characteristics/ development process/ trend analysis/ Three Gorges Project分类
建筑与水利引用本文复制引用
江磊,陈立,孙宇飞,闫霞..宜昌至杨家脑河段初期冲刷发展过程与趋势的分析[J].泥沙研究,2012,(6):52-57,6.基金项目
交通运输部黄金水道通过能力提升重大专项课题(201132822430)"长江中游水沙特性及运动规律研究" （201132822430）
