引水式水电站压力前池的泄水建筑物是保证压力前池安全和充分发挥工程效益的关键。青印溪六级水电站压力前池泄水陡坡,由于纵坡陡、落差大且流速高,所以槽庭采用双人字形齿槛人工加糙,促使水流扩散,以增加水深和降低水流速度,防止了高速水流引起的空蚀、脉动、振动、磨损及冲刷等破坏作用,其效果良好。 Drainage structures of pressure forecourt of diversion hydropower station are the key to ensure the safety of pressure forecourt and give full play to engineering benefits. Due to the steep slope, large drop and high flow rate, the Qingyinxi Sixth Hydropower Station pressure front dike steep slopes, so trough the court with double glyph sill artificial rough, to promote water flow to increase water depth and reduce water flow speed, to prevent the High-speed water-induced cavitation, pulsation, vibration, wear and erosion and other destructive effects, the effect is good.