黄河泥沙动态分析

Dynamic Analysis of Sediment in the Yellow River

文中分年和汛期两方面分析总结了 195 0～ 1999年间黄河中下游径流量、输沙量和含沙量的年际和年内分配变化特点 ,分析了三门峡水库不同运行时期下游河道泥沙动态。研究结果表明 ,黄河泥沙 5 0年间发生了很大的变化 ,表现在径流量、输沙量、含沙量变化不同步 。

Based on the field data from 1950 to 1999, this paper analyzed the annual variations and annual distribution of the runoff, sediment amount and concentration in the middle and lower Yellow River Sediment changes in the lower Yellow River during the different operations of Sanmenxia reservoir are also analyzed The result shows that sediment characteristic values in the Yellow River have been changed greatly in the last 50 years For example, variability of the runoff, sediment amount and concentration is asynchronous, and the runoff proportion in the flood season becomes lower, but the sediment amount proportion in the flood season becomes higher