泥沙研究Issue(3)：10-16,7.
非恒定流清水冲刷输沙规律初步研究
Preliminary study of bed load sediment transport of unsteady flow
摘要
Abstract
Through flume experiment of clear-water scour by fluctuating flows and steady flows, the bed load sediment transport of unsteady flow is studied. The rise and fall of the water velocity during a flood, the gradient, the variation characteristics of sediment transport and the main factors of sediment transport rate in the flood peak process are analyzed. The hysteretic effect of accelerated and decelerating flows on sediment transport is revealed. The estimating method of peak sediment discharge and the “equivalent water discharge of sediment transport equal to the peak discharge sediment transport process” are proposed, which are of reference to the man-made flood peak design, river bed deformation analysis and computation as well as the river model design.关键词
非恒定流/推移质/输沙律/水槽实验Key words
unsteady flow/ bed load/ sediment transport/ flume experiment分类
建筑与水利引用本文复制引用
程小兵,王艳华,乐培九..非恒定流清水冲刷输沙规律初步研究[J].泥沙研究,2011,(3):10-16,7.基金项目
西部交通建设科技项目(200732822471) （200732822471）
