非对称消力池水力特性的试验研究

Experimental study on hydraulic characteristics of non-symmetric hydration pool

泄水建筑物下泄水流入水轴线与消力池轴线的布置形式对池内水流特性和消能率等影响的相关研究甚少。以石梁子水库的消力池为对象,采用水工模型试验对比研究对称和非对称消力池的水流特性和消能率。研究结果表明:非对称布置的消力池内,水流在单侧边界附近形成剧烈的回旋,单侧边墙的流速明显大于另一侧,易被冲击破坏,尾坎处也有明显二次跌流现象;对称体型的两侧边墙附近具有对称小涡旋,强度和范围较小,靠近边墙的流速较小,尾坎水流与下游衔接平顺,其水流特性优于非对称体型,且两种体型下的消能率相当。

The influence of sluicing flow entry axis under release structure and the layout formwater flow features in the pool, energy dissipation efficiency, etc. is rarely studied. The hydration pool of ShiliangziReservoir is adopted as an object. The hydraulic model test is adopted for comparativelyenergy dissipation efficiency of symmetrical and asymmetric hydration pools. The research results show thasevere swirl near the unilateral boundary, and the unilateral side wall flow velocity is significantly greater than the other side, and it is easily damaged by impact in the asymmetric hydration pool. The tail gate also suffers from obvious secondary drop flow phenomena. There are symmetrical small vortexes near two side walls with a symmetrical shape. Their strength and scope are small. The flow velocity near the wall is low. Tail gate water flow is smoothly linked to the downstream. Its flow characteristics is superior to the asymmetric shape. The energy dissipation efficiency under the two shapes isequivalent.