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龙开口水电站坝址处河床窄、泄洪频率高、流量大,是典型的大单宽流量高混凝土坝,此类工程对泄水建筑物的消能防冲效果和运行安全性都有很高的要求.以水工模型优化试验为手段,通过对各典型工况消能防冲效果以及流态的研究,得出宽尾墩挑流方案的不足之处,同时探讨并论证了大差动-舌形坎挑流方案的优越性.研究成果对同类型工程枢纽的消能防冲设计有一定的借鉴意义.
The dam of Longkoukou hydropower station has a narrow riverbed, high discharge frequency and large flow rate. It is a typical large single-width high-flow concrete dam. Such projects have high energy-dissipation and anti-scouring effects and operational safety Requirements.According to the optimization test of hydraulic model, through the research on energy dissipation and anti-erosion effect and flow regime of typical working conditions, the shortages of the tailrace piers lifting scheme are obtained, meanwhile, The superiority of the tongue-shaped ridge-picking scheme.The research results have some reference to the energy-dissipating and anti-impact design of the same type of engineering hub.