威远江水电站泄水建筑物消能方案试验研究

Experimental Study on Scheme of Energy Dissipation of Discharge Structures of Weiyuanjiang Hydropower Station

通过威远江水电站泄水建筑物的整体模型试验,研究了泄水建筑物消能工的消能效果,发现了其主要问题为溢洪道挑流坎挑流消能时,当泄流量较大时的挑距过大,挑流水舌不能与下游水流很好衔接.泄洪洞挑流坎挑流消能时,当泄流量较小时,挑距较短.经过试验研究提出了修改解决方案,并经试验验证得到较好的消能效果,为工程设计和施工提供了可靠的设计依据.

The experimental study is conducted to show energy dissipation in the downstream side of the spillway and flood discharge tunnel of Weiyuanjiang Hydropower Station through model test. The trajectory bucket is improved and optimized for suitable trajectory distance and small scouring. The improving effect is verified by the observation of water nappe and washout character.