水科学进展2001，Vol.12Issue(1)：1-6,6.
细颗粒对粗颗粒床沙质输沙率影响的初步研究
Effect of Fine Material on Transport of Bed Material Load in Hyperconcentrated Flow
摘要
Abstract
In this paper a transport rate equation of bed material load isproposed with the consideration of the effect of fine material’s flocculation．The equation indicates that the transport of suspended bed material load in hyperconcentrated flow can be increased significantly due to the reduced settling velocity and Rouse number by the presence of fine grains generally behaving as wash load．Since the fine material mainly comes from upstream watershed，the introduction of fine material’s concentration in the calculation of transport rate of bed material load reflects the impact of watershed on sediment transport．Comparison of field data in the Yellow River and the calculation result of present equation shows that the equation can reproduce the phenomenon that the more the fine sediment comes from upstream，the more the coarse sediment is transported in the Lower Yellow River under the same flow conditions．关键词
床沙质输沙率/高含沙水流/细颗粒分类
建筑与水利引用本文复制引用
钟德钰,王士强,王光谦..细颗粒对粗颗粒床沙质输沙率影响的初步研究[J].水科学进展,2001,12(1):1-6,6.基金项目
国家自然科学基金 （）
