摘要
峡口水电站泄水建筑物体型优化试验研究结果表明:原设计表孔采用窄缝型式效果欠佳,采取大差动高低坎型式,其下泄水流在空中充分碰撞,明显提高消能效果,大大减轻对下游河道的冲刷;降低中表孔挑坎高程,可增大水舌碰撞角度,提高空中消能率;中孔出口斜坡段坡度改为-5°后,可消除负压,更利于水舌扩散。
Through optimization experimental study on the flood-releasing works shape in Xiakou Hydropower Station, it is shown that the effect of using slit bucket in the original design of the surface orifice is not as good as that of using big differential sill, which can improve the effects of energy dissipation and mitigate scouring at downstream river course; the angle of water tongue collision is widen, and the energy dissipation efficiency is increased by lowering the elevation of the middle orifice bucket. The negative pressure can be eliminated, and the water tongue can diffused fully if the slope of the middle orifice outlet is decreased to - 5°.
出处
《中国农村水利水电》
北大核心
2005年第2期109-111,共3页
China Rural Water and Hydropower
关键词
水工模型试验
体型优化
泄水建筑物
峡口水电站
hydraulic model test
shape optimization
discharge structure
Xiakou Hydropower Plant
