水力发电学报2011，Vol.30Issue(5)：106-113,8.
三峡水库蓄水后荆江典型分汊河段演变机理及发展趋势研究
Evolution trend and causes of the typical braided middle Yangtze reach after Three Gorges reservior impoundment
摘要
Abstract
Under time variations of flow,sediment and river bed boundary,etc.,the dynamic flow axis of braided river reach sways quite commonly,which provides power to translocation of the main and branch channels and complicates evolution of channel bars and point bars.Impoundment of the Three Gorges reservoir causes greater variations in flow and sediment and hence more substantial and influential swaying of the mainstream path.This paper analyzes the evolution of braided reach in a case study of Shashi reach,and demonstrates the important roles of hydrodynamic conditions,oncoming sediment and interaction of channel bars in the evolution of shoals.The evolution trend is studied through a comprehensive analysis of the flow and sediment conditions after the impoundment.关键词
河流泥沙工程学/分汊河段/主流摆动/特征流量级/三峡水库蓄水Key words
river sedimentation engineering/braided reach/sway of mainstream/characteristic discharge/TGP water-impoundment分类
建筑与水利引用本文复制引用
朱玲玲,张为,葛华..三峡水库蓄水后荆江典型分汊河段演变机理及发展趋势研究[J].水力发电学报,2011,30(5):106-113,8.基金项目
国家自然科学基金 （）
