台阶式溢洪道消能特性的研究

结合斯木塔斯水电站台阶式溢洪道水力学模型试验结果,引入了相对消能率和单宽消能功率,总结了台阶高度、单宽流量与消能率、相对消能率和单宽消能功率的变化规律,重点研究相对消能率的变化规律。研究表明,流量增加时台阶溢洪道的相对消能率和单宽消能功率逐渐增大,表明台阶所起到的消能功效增强了。

Study on Energy Dissipation Properties of Stepped Spillway

Combining with the hydraulic model experiment results of Simutasi Hydropower Station’s stepped spillway,and introducing the ralative energy dissipation ration and unit-width energy dissipation power,the variation laws of step height,unit-width discharge,energy dissipation ratio,relative energy dissipation ratio, and unit-width energy dissipation power are summarized here,especially the changing regularity of relative energy dissipation ratio is studied.The results show that the relative energy dissipation ratio and unit-width energy dissipation power of stepped spillway would be increased with the increasing of flow,indicating that the energy dissipation efficacy of steps is enhanced.