长江中下游河道演变规律及冲淤预测  

Evolution analysis and scouring-deposition prediction of middle and lower reaches of Yangtze River

作　　者：姚仕明[1,2] 卢金友[1,2] 

机构地区：[1]长江科学院河流研究所,湖北武汉430010 [2]水利部江湖治理与防洪重点实验室,湖北武汉430010

出　　处：《人民长江》2013年第23期22-28,共7页Yangtze River

基　　金：国家自然科学基金资助项目(51379018;51339001)

摘　　要：在自然因素与人类活动的共同作用下,长江中下游干流河道的边界条件与来水来沙条件已发生了显著变化,河道演变呈现出一些新的特点。在总结分析人类活动影响下长江中下游干流河道演变主要规律的基础上,结合数学模型计算与实体模型试验的成果,预测了长江中下游河道宜昌至大通河段的冲淤过程、分布及河势变化趋势,指出下阶段需进一步研究的相关课题。研究成果可供深入研究长江中下游河道演变及相关工程治理参考。Boundary condition and runoff - sediment of middle - lower Yangtze River has been changed greatly under coupling action of natural parameter as well as human activity, therefore several new characteristics of fluvial evolution has emerged. We mainly summarize the fluvial evolution law of the middle - lower Yangtze River under human activity, especially after the opera- tion of Three Gorges Reservoir, and further conduct a prediction on scouring - deposition process and river regime change tenden- cy of middle -lower reach（ Yichang to Datong） by jointly using numerical simulation and model test. The next research topics worth exploring are proposed. The research results could be a reference for fluvial process study and relative harnessing projects measures of middle - lower reach of Yangtze River.

关 键 词：河床演变 河势变化 冲淤预测 三峡水库 长江中下游 

分 类 号：TV85[水利工程—水利水电工程]