低水头水闸下游消力池长度优化研究  

Optimization research on the length of the downstream stilling basin of low-head sluice

作　　者：黄智敏[1] 付波[1] 陈卓英[1] HUANG Zhimin;FU Bo;CHEN Zhuoying(Guangdong Research Institute of Water Resources and Hydropower,Guangdong Provincial Key Laboratory of Hydrodynamics,Guangzhou 510635,China)

机构地区：[1]广东省水利水电科学研究院广东省水动力学应用研究重点实验室

出　　处：《水资源与水工程学报》2019年第4期154-158,共5页Journal of Water Resources and Water Engineering

基　　金：广东省科技创新项目(2012-04)

摘　　要：低水头水闸下游消力池的水流条件较复杂,水闸出流条件(自由出流、淹没出流)对闸下游的流态和水跃长度影响较大。通过水力模型试验研究,提出了水闸闸门全开敞泄、宣泄最大流量运行条件的下游消力池长度的计算方法:水闸出流为自由出流时,可按现有的水闸设计规范的方法计算消力池长度;水闸出流为淹没出流时,闸下游水跃长度较短或呈无水跃状态,此时,可采用水闸上游为正常蓄水位、闸门控制下泄最大开度泄量计算消力池长度。研究成果可合理地计算和选取低水头水闸下游消力池长度,在确保工程安全运行的前提下,大大节省工程投资。The flow condition of the downstream stilling basin of the low-head sluice is complex,and the outflow conditions of the sluice(free outflow,submerged outflow)have a great influence on the flow regime and water jump length of the downstream of the sluice.Based on the hydraulic model test,the calculation methods of the downstream stilling basin length were proposed under the operating conditions of sluice gate fully opened and maximum discharge:First,the length of the stilling basin can be calculated by using the existing design specification method under free flow conditions.Second,the length of hydraulic jump is shorter or no hydraulic jump in the downstream of the sluice under submerged outflow conditions,and then the length of the stilling basin can be calculated by using the upstream normal water level and the maximum opening discharge on gate controls of the sluice.Our results can be used to calculate and select reasonably downstream stilling basin length of low head sluices,and on the premise of ensuring the safe operation of the project,saving greatly the project investment.

关 键 词：低水头水闸 消力池 流态 消力池长度 模型试验 

分 类 号：TV66[水利工程—水利水电工程]