典型侧堰过流能力试验研究  

Experimental Study on Flow Capacity of a Typical Side Weir

作　　者：姜宇强 刘敏杰 韩晓维 伊楠 高广磊 JIANG Yuqiang;LIU Minjie;HAN Xiaowei;YI Nan;GAO Guanglei(Jinyun County Water Conservancy Bureau,Jinyun 321400,Zhejiang,China;Zhejiang Institute of Hydraulics and Estuary(Zhejiang Institute of Marine Planning and Design),Hangzhou 310017,Zhejiang,China;Zhejiang Provincial Key Laboratory of Estuary and Coast,Hangzhou 310017,Zhejiang,China)

机构地区：[1]缙云县水利局,浙江缙云321400 [2]浙江省水利河口研究院(浙江省海洋规划设计研究院),浙江杭州310017 [3]浙江省河口海岸重点实验室,浙江杭州310017

出　　处：《浙江水利科技》2022年第3期21-26,共6页Zhejiang Hydrotechnics

摘　　要：侧堰过流能力是侧堰研究中的重要方向之一,其值与侧堰附近相关水力参数存在一定的影响。采用1:50正态河道物理模型,对分洪角31°,堰高1 m侧堰过流能力开展试验研究。结果表明,侧堰流量系数C_(w)随h_(2)/P增大而减小,随Fr_(1)的增大而增大。侧堰分流比η随下游Fr_(2)的增大而减小,随h_(2)/P的增大而增大。分流比η与Fr_(2)的相关性较好,与h_(2)/P的相关性相对较差。对侧堰流量系数C_(w)及分流比η分别进行拟合,提出相应计算公式,其中流量系数拟合公式相关性较好,误差在7%以内,分流比拟合公式误差相对较大,最大误差约为28%,无量纲参数χ的定义需进一步研究。The flow capacity of the side weir is one of the important directions in the study of the side weir,and the flow capacity has a certain influence on the relevant hydraulic parameters near the side weir.A 1:50 normal river physical model was used to carry out experimental research on the flow capacity of the side weir with a flood diversion angle of 31°and a weir height of 1m.The results show that the discharge coefficient C_(w) of the side weir decreases with the increase of h_(2)/P,and increases with the increase of Fr_(1).The side weir outflow efficiencyηdecreases with the increase of downstream Fr_(2),and increases with the increase of h_(2)/P.The outflow efficiencyηhas a better correlation with Fr_(2) and a relatively poor correlation with h_(2)/P.The flow coefficient C_(w) and the outflow efficiencyηof the side weir are respectively fitted,and the corresponding calculation formulas are proposed.The fitting formula of the flow coefficient has good correlation and the error is within 7%.The error of the split ratio fitting formula is relatively large,and the maximum error is about 28%.The definition of dimentionless parameterχneeds further study.

关 键 词：侧堰 过流能力 流量系数 分流比 

分 类 号：TV651[水利工程—水利水电工程]