摘要
分析了黄河中游大理河地区十多个小流域的洪水输沙过程，认为该地区洪水具有特殊的退沙规律—含沙量高，衰退缓慢，退沙规律近乎直线，可以用三角形的概化方法填拟次洪水的含沙量过程；三角形的顶点可以根据水沙关系确定，整个退沙过程可以根据线性关系求解，有了洪水过程便可估算含沙量过程，并求得输沙率过程。
ediment transport process by flood in the ten odd small basins of the region of Dali River on the middle reaches of the Huanghe River is analyzed and it is show that there is a special sediment retrogradation rule of flood in this region,i.e. the sediment concentration is high,and the retrogradation process is slow,approaching a straight line in the graph.The process of sediment concentration with the time of flood can be simulated by the generalized method of triangle,The apex of triangle can be determined by the relation between water and sediment,and the whole process of sediment retrogradation can be solved by the linear relation,So the process of sediment concentration can estimated and the transport rate can also be determined.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1994年第4期14-20,共7页
Journal of Hohai University(Natural Sciences)
关键词
黄河中游
输沙过程
输沙率
估算
Silt transport processes Estimations modes Grooves Basin
