明渠泄洪闸底流辅助消能工水工模型试验研究  

Hydraulic Model Test on Underflow Auxiliary Energy Dissipater of Sluice in Open Channel

作　　者：潘露[1] 王川 叶茂 PAN Lu;WANG Chuan;YE Mao(Sichuan Water Conservancy Vocational College,Chengdu Sichuan 611231;PowerChina Chengdu Engineering Corporation Limited,Chengdu Sichuan 610072)

机构地区：[1]四川水利职业技术学院,四川成都611231 [2]中国电建集团成都勘测设计研究院有限公司,四川成都610072

出　　处：《四川水力发电》2024年第6期138-144,共7页Sichuan Hydropower

摘　　要：结合1∶70水工模型试验,对四川省某水电站明渠泄洪闸底流辅助消能工进行研究。研究成果表明:消力墩、“T型墩+差动坎”比连续坎更能显著提高水流消能率,而连续坎体型简单,结构受力小,当护坦流速超过16 m/s且有排沙需求时,其适用性更好;连续坎位置、坎高和迎水面坡比与护坦内水流消能率呈正比关系,体型参数选择应关注护坦内水流流态和坎后水面跌落,并应考虑工程量和是否有排沙需求;模型试验具有一定缩尺效应,原型中的水流紊动作用更强。Combined with 1∶70 hydraulic model test,the auxiliary underflow energy dissipater effects of sluice in an open channel were studied.The results show that baffle pier and differential bucket with T-shaped are more efficiently of energy dissipation than continuous bucket,the shape of continuous bucket is simple and the structural stress on continuous bucket is small,and the applicability is better than other shapes when the flow rate is more than 16m/s on apron and desilting.The flow pattern,velocity,dropping height are in direct proportion to efficiency of energy dissipation on apron.The flow pattern,dropping height,project quantity and desilting are crucial for selecting the parameters.For the scale effect of model test,the turbulent of flow of prototype is more strong.

关 键 词：模型试验 原型观测 辅助消能工 水流消能率 

分 类 号：TV131[水利工程—水力学及河流动力学]