灞河水沙特性变化分析

Analysis on the changing characteristics of sediment and water in the Bahe River

为了研究灞河水沙变化规律,通过对灞河近50年资料分析可知,自20世纪70年代以后,灞河水沙呈现减小趋势,其中20世纪90年代减少十分显著,人类活动和气候变化是灞河水沙减小的主要因素。另外,从水沙关系可知,一旦来水量增大,来沙量也相应增大,将会对河工建筑物造成极大危害。

In order to research the changing law of the water and sediment in Ba River, it can be known from the nearly 50 year＇s data analysis that the water and sediment have a decreasing trend since the 1970s. The major factors were the human activity and the climate change, espe- cially in the 1990s. In addition, the relationship between water and sediment shown that once the flow increased, the sediment also increased, and it will be made a harmful consequence to the construction of river course.