惠州抽水蓄能电站上库溢流坝阶梯消能试验研究

Experimental study on stepped energy dissipation of upper reservoir overflow dam at Huizhou Pumped Storage Power Station

介绍惠州抽水蓄能电站工程概况,建议将上库溢流坝挑流消能改为底流消能方式。通过水力模型试验研究,推荐溢流坝采用“坝面削角阶梯+底流消力池”的联合消能方案。试验表明,削角阶梯坝面末端泄流的动能只占相应光滑坝面动能的30％以下,相应动能消能率达70％以上,消能效果较显著,大幅度减小了溢流坝下游消力池的尺寸和工程量。

The general situation of the project of Huizhou Pumped Storage Power Station was introduced, and the mode of energy dissipation by hydraulic jump was suggested for upper reservoir overflow dam. Based on hydraulic model test, an energy dissipation scheme with the combination of angle-cut stepped dam face and bed flow stilling basin was recommended. The test results show that the kinetic energy of discharge at the end of angle-cut stepped dam face is less than 30% of that of the smooth dam face, and the rate of kinetic energy dissipation is higher than 70%, showing a notable effect of energy dissipation. The scheme greatly reduces the size of stilling basin below the overflow dam as weLl as its work load in the project.