水力发电学报2012，Vol.31Issue(6)：120-125,6.
多沙河流的波系结构Ⅰ：波系方程与特点
Wave hierarchies in alluvial rivers of heavy sediment load Ⅰ. Equations and properties
摘要
Abstract
This study establishes the wave hierarchies describing the flood propagation and its interactions with river bed evolution in alluvial rivers of heavy sediment,based on the theory of nonlinear simple waves.The wave hierarchies consist of higher-order and lower-order waves,and these wave patterns are different in scale and motivation.The multiple time scales of interactions between fluid flow,sediment transport and bed evolution can be illustrated by the interlacing of dynamic waves,kinetic waves,and river bed waves.The property of the wave hierarchies shows that the feedback of high sediment concentration and large-scale riverbed deformation on flood propagation cannot be ignored.Furthermore,when the length scale becomes larger,the lower-order waves will play a more dominant role in the wave hierarchies.Therefore,the kinetic wave will mainly determine the flood propagation in long natural rivers.关键词
水沙动力学/多沙河流/洪水/波系/耦合Key words
sediment dynamics/alluvial rivers of heavy sediment load/flood/wave hierarchies/coupling分类
建筑与水利引用本文复制引用
丁赟,刘磊,钟德钰..多沙河流的波系结构Ⅰ：波系方程与特点[J].水力发电学报,2012,31(6):120-125,6.基金项目
国家重点基础研究发展计划（973计划） （）
国家自然科学基金项目 （）
水利部黄河泥沙重点实验室开放课题基金 （）
中央高校基本科研业务费专项资金 （）
