泥沙研究Issue(2)：38-46,9.
三峡工程蓄水运用后长江中游河道演变初步研究
Fluvial processes in Middle Yangtze River after impoundment of Three Gorges Project
摘要
Abstract
The Three Gorges Project (TGP) is the key project for the development of Yangtze River Basin. In this paper, based on the analysis of the water flow and sediment change downstream the TGP after the impoundment and the measured topography from Yichang to Hukou, the river regime change in this reach after the impoundment of the TGP is studied. The conclusion indicates that after the impoundment of the TGP,the scouring degree along the downstream channel were increased, and the character of the scouring was that the shoal and the principal channel were scoured simultaneously,although before the impondment of the TGP,the shoal was always in deposition. Along with the reduction in sediment load from the upstream, firstly, distinct vertical scouring from Yichang to Zhicheng happened, and the riverbed was coarsened expressly. Secondly, in the Jingjiang reach, the channel has been developed to narrow and deep form. Thirdly, in some parts of the curved reach from Chenglingji to Hukou, the principal flow swayed and the bank collapsed frequently in concave banks.关键词
三峡工程/长江中游/河道演变Key words
Three Gorges Project/ Middle Yangtze River/ fluvial processes分类
建筑与水利引用本文复制引用
许全喜,袁晶,伍文俊,肖宜..三峡工程蓄水运用后长江中游河道演变初步研究[J].泥沙研究,2011,(2):38-46,9.基金项目
国家杰出青年科学基金项目(50725930) （50725930）
国家自然科学管理数据库建设",水利部公益性行业科研专项"梯级水库运用对长江中游水沙与冲淤影响研究"(200901003) （200901003）
