摘要
针对瓦村水电站溢洪道出口水流挑距过大、水舌空间扩散效果不佳、入水区域集中、泄洪消能效果差及泄槽内水翅现象严重等问题,采用比尺为1∶60的正态物理模型对溢洪道体型进行优化试验研究。结果表明,在闸墩尾部加设尾墩,使泄槽段水流流态有了极大的改善,水流平顺,基本上消除了水翅现象;采用连续燕尾挑坎使溢洪道出口水舌合理归槽,空中扩散效果良好,解决了入水集中的问题,消能效果较好,所提挑坎布置形式可供相关工程参考。
Aiming at the problems,such as too large bucket distance,poor effect of water tongue space diffusion,concentration of water area,poor effect of flood discharge energy dissipation,and serious water wings phenomenon in the spillway outlet flow of Wacun hydropower station,the normal physical model test with the scale of 1∶6 was carried out to optimize the shape of spillway.The results show that adding tail pier can greatly improve the flow regime of discharge section and forms a smooth flow to basically eliminate the phenomenon of water wing;continuous dovetail bucket makes water tongue of spillway outlet return tank reasonably,and the effect of air diffusion is good,which solves the problem of water area concentration;the effect of energy dissipation is better.Therefore,the proposed arrangement of bucket provides reference for the similar projects.
出处
《水电能源科学》
北大核心
2017年第11期68-72,共5页
Water Resources and Power
关键词
泄洪消能
水翅
连续燕尾挑坎
模型试验
瓦村水电站
flood discharge and energy dissipation
water wings
continuous dovetail flip bucket
model test
Wacun hydropower station
