黄河冲淤特性“相对清水冲刷、相对浑水淤积”

Critical condition between scour and siltation in the Yellow river

本文回顾总结了以往对黄河干支流河道冲淤特性的研究情况 ,利用所提出的冲淤临界流量与含沙量的关系与渭河下游、黄河下游进行了对比。以此为基础 ,勾画出了黄河干支流冲积河道“相对清水冲刷、相对浑水淤积”的物理图景 ,提出了多沙河流“相对清水冲刷、相对浑水淤积”

The characteristics of scour and siltation in the middle and lower Yellow River channels is reviewed in this paper.The relation of discharge and sediment concentration under critical conditions between scouring and siltation was derived and compared with the field data of the Yellow River and its tributaries.It is shown that the Yellow River scours when river flow is relatively clear and silt up when the flow is relatively muddy,the critical values between relatively clear and relatively muddy can be calculated.