斯木塔斯台阶式陡槽溢洪道水力特性模型试验研究

Hydraulic Characteristics Model Test of Stepped Spillway in Simutasi Hydropower Station

斯木塔斯水电站原设计方案泄水建筑物中溢洪道采用了台阶式消能方式,为了论证在高水头,小单宽流量下台阶式溢洪道应用的合理性,有必要对设计方案进行模型试验的研究。借助大比尺的模型试验,对该溢洪道段的流态,压强,掺气,消能率等进行了观测。试验结果表明各项水力特性良好,消能效果显著,满足工程实际的需要,为工程决策提供了科学依据。模型试验验证了台阶消能工在高水头,小单宽流量下应用的可行性,对类似工程具有一定的参考价值。

In original design scheme,the spillway of the discharge structure in Simutasi Hydropower Station adopts the stepped energy dissipation.To prove the rationality of application under the condition of high water head and small unit width discharge,it is necessary to carry out a hydraulic model test.With the help of a large-scale model test,the flow,the pressure,the aeration,the energy dissipation ratio and so on in spillway are observed.The results show that all kinds of spillways have good hydraulic characteristics and can produce a good energy dissipation effect,meeting the requirement of the practical engineering and providing a scientific foundation for the engineering decision.The model test verifies the feasibility of the stepped energy dissipator used under the condition of high water head and small unit width discharge,which serves as a reference for other similar projects.