红石水电站消能方式改变对电站运行的影响

Influence of energy dissipation mode change on operation of Hongshi hydropower station

红石大坝溢流堰堰型为WES实用堰,溢流坝采用消力戽消能形式。在实际运行中发现,目前的消力戽存在消能效率低,对下游河床及岸坡淘刷严重。通过造成破坏的原因分析与模型试验,采用了底流与消力池结合的消能方式,实际运行证明,改造后的消能方式改变了原来消能效率低,对下游河床及岸坡淘刷严重的现象,取得了良好应用效果。

The overflow weir type is WES practical weir and the energy dissipation type of overflow dam is roller bucket for the Hongshi dam. The practical operation shows that the efficiency of energy dissipation of present bucket is low and the bed and bank scour is serious for the lower reaches. Through broken reason analysis and model test, the energy dissipation by hydraulic jump combined with stilling basin is adopted. The actual operation proves that the transformed forms of dissipation could get good application effect for the low energy dissipation efficiency and the serious scour to the bed and bank.