清远水利枢纽消能防冲问题试验研究

消能防冲是枢纽的安危所系,由于清远水利枢纽工程所处的北江下游河道受人为采砂的影响,河道水位连年下切,枢纽的消能防冲设计受到高度重视。对此利用宽水槽断面模型,在定床模型试验研究中对消能工体型进行多方案优化并确定了推荐方案,在下游局部动床试验中对推荐方案在各种工况下的闸下冲刷情况进行研究,分析消能防冲设计的安全性及可靠性。试验研究解决了该平原河道大型水闸枢纽消能防冲的关键技术难题,试验推荐方案为工程设计所采纳。研究成果可供平原河流大型水闸枢纽消能防冲设计借鉴和参考。

Model Test of Energy Dissipation and Anti-Souring Design of Mild Channel Water Locks Key Project in Qingyuan

Energy dissipating and anti-scouring plays an important role in the security of water locks key project.Therefore,the design of energy dissipation of the hinge attracts highly attention,because the sand mining near Qingyuan water control project,which is located at the downstream of Bei River,has led to the drop of water level.Working out the figure of energy dissipation structure in rigid bed model,this paper uses wide section water channel model and optimizes multi-solution and determined recommended program.Moreover,the paper studies its security and reliability under different wash circumstances against barrage in partially downstream movable-bed test,as well as the design of energy dissipation and anti-scour of the sluice project.This study has positive effects on resolving difficult problems of large barrage in the case of mild channel.The outcomes of this study can be adopted for the similar projects’ reference.