摘要
建坝后水库下泄水流挟带的床沙质含沙量减少,坝下游河床出现冲刷。作者利用26条河流坝下游冲刷的资料,建立了深泓最大冲刷深度与建坝前后多年平均洪峰流量变化的关系。它可用来粗估坝下游河床的冲刷深度。
The released flow from reservoirs carries less sediment load of bed material than predam periods. Such a flow induces river channel erosion below dams. A relationship between channel bed erosion and an index of flow characteristics variation after dam commissioning is established, which can be used as a preliminary tool to predict river channel erosion below dams.
出处
《泥沙研究》
CSCD
北大核心
2003年第5期28-31,共4页
Journal of Sediment Research
关键词
水库下游
河床冲刷
河道
河槽下切
冲刷深度
river channel below dams
river channel erosion
channel lowering
