泄水涵洞中平板闸门流量系数的试验研究  

Experimental study on flow coefficient of flat gate in discharge culvert

作　　者：吴宇峰[1] 

机构地区：[1]西华大学能源与环境学院,四川成都610039

出　　处：《水利水电技术》2011年第6期98-100,共3页Water Resources and Hydropower Engineering

基　　金：西华大学人才基金(R08020406);水利水电工程校级学科重点建设项目(XZD0815-09)

摘　　要：通过对有平板闸门泄水涵洞的水流进行了试验,对涵洞关键点的压强、流量以及闸后收缩水深进行测量,对相应各点的水头损失进行了计算,对试验数据进行了分析,得出了涵洞中闸后收缩水深的拟合计算式,最后分析得出了涵洞中平板闸门的流量系数。结果表明了涵洞中的闸门流量系数主要与涵洞前水库水深和涵洞的高度有关,其值比堰顶的流量系数大,比管嘴出流的流量系数小。Through the experiment made on the flow of the discharge culvert installed with fiat gate, the pressures on the key points of the culvert, the flow rate and the convergent water depth behind the gate are measured, and then the water head losses of the relevant points are calculated and the experiment data are analyzed; from which the fitting formula for calculating the con- vergent water depth behind the gate is obtained and the flow coefficient of the flat gate in culvert is finally got from the analysis concerned. The result shows that the flow coefficient of the gate in ulvert is mainly related to the water depth of reservoir in front of culvert and the height of culvert, of which the value is higher than the flow coefficient of the weir crest and is lower than the flow coefficient of the orifice outflow.

关 键 词：直角进水口 有压泄水洞 水头损失 平板闸门 流量系数 

分 类 号：TV651[水利工程—水利水电工程]