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后河水库重力拱坝坝面溢流挑流消能经过水工模型试验确定的方案，其特点为：（１）改善坝面及挑流流态、减小水流向心集中，分散挑射水舌，减轻对河床、岸坡冲刷的方案体型。（２）利用在挑流坎段加直壁导水墙和曲面贴角的措施，提高了消能防冲效果，即分散了挑流水舌，增大了入水面积，调整了冲坑位置，减小了冲坑深度。（３）在贴角及导水墙转折处测定了时均压力、脉动压力，这些部位的时均压力均比较高，而脉动压力占时均压力的８％～１０％，只占流速水头的３％左右，主频区一般为０．２Ｈｚ～１２．６Ｈｚ，属于低频区。
After the project of hydrodynamic model test, the energy dissipation of the dam surface of the arch dam of the Houhe Reservoir is characterized by: (1) to improve the dam surface and the flow pattern of the pick-up stream, to reduce the concentration of water flow to the heart, , Reduce the river bed, slope erosion program size. (2) The measures of energy dissipating and anti-scouring are improved by the measures of adding straight wall and curved surface in the section of pick-up flow, that is to say, the water pick-off tongue is dispersed, the inflow area is enlarged, the position of the pit is adjusted, Small pit depth. (3) The average pressure and pulsating pressure were measured at the corner of the corner and the wall of the guide wall, and the average pressure at these positions was relatively high, while the pulsating pressure accounted for 8% -10% of the average pressure, accounting only for the flow head 3% or so, the main frequency is generally 0.2Hz ~ 12.6Hz, belonging to the low frequency area.