泄洪闸闸后防冲设计

针对新疆山溪性多沙河流的水沙特点,提出了建在多沙河流卵砾石河床上的低水头引水枢纽,泄洪闸闸后应适当消能的观点,即应避免因闸后局部消能过大而影响下游河道沿程冲刷。并通过水工模型试验研究成果的分析,探讨了建在多沙河流卵砾石河床上的低水头引水枢纽闸后防冲设计的指导原则。采取适当的消能防冲方式适当消能,使得经枢纽下泄的洪水既能将由河道洪水带来的推移质泥沙挟带过闸并避免闸后下游出现沿程淤积;又能避免枢纽泄水建筑物闸后出现较大的局部冲刷以至于危害枢纽安全。

Scour Prevention Design After Opening Flood Discharge Gate

Based on the characteristics of the sandy rivers in Xinjiang,this article comes up with the idea to properly consume energy after opening flood discharge gate of the water diversion pivot on low water and on the river bed with plenty of sand and ovoid gravels,which is to avoid the influence on the erosion of the river course caused by the excessive local energy consumption after opening flood discharge gate. This paper also explores some guidelines after opening flood discharge gate of the water diversion p...