云南某水电站泄洪消能设计研究

云南某水电站具有洪峰流量大、下游水位高、多泥沙等特点,通过方案比选和水工模型试验研究,推荐采用五表孔泄洪、宽尾墩与跌坎底流联合消能的布置方案。本工程首次提出了宽尾墩与跌坎底流联合运用的消能方式,该消能方式很好的利用宽尾墩良好的消能效果,又克服宽尾墩挑射水流对底板的冲击问题。

Design of Flood Discharging and Energy Dissipation Structure for a Certain Hydropower Station

A certain hydropower station in Yunnan Province has such the characteristics as the large peak discharge, the high water level in downstream, the multiple sand and so on. Through the comparison and selection for plans and the hydraulic model test, the layout scheme is recommended to adopt with five surface orifices for the flood discharge and with the flaring pier and falling-sill bottom flow for the energy dissipation. By this type of the energy dissipation firstly adopted in this project, the good effect of the energy dissipation with the flaring pier is fully utilized, and the impact of the jet-trajectory flow onto the bottom plate is also overcome.