白水水库工程溢流坝段底流消能试验研究  

Experimental Research on the Energy Dissipation by Hydraulic Jump for Spillway Dam in Baishui Project

作　　者：邢建营 杜嘉宇 王均星[3] 李双 XING Jian-ying;DU Jia-yu;WANG Jun-xing;LI Shuang(Yellow River Engineering Consulting Co. Ltd,Zhengzhou 450003,China;Kunming Engineering Corporation Limited,Kunming 650051,China;State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China)

机构地区：[1]黄河勘测规划设计研究院有限公司,郑州450003 [2]中国电建集团昆明勘测设计研究院有限公司,昆明650051 [3]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《中国农村水利水电》2020年第11期219-226,共8页China Rural Water and Hydropower

摘　　要：白水水库工程溢流坝为中水头泄水建筑物,采用底流消力池消能。受下游地形及施工布置影响,消力池长度受限,传统消力池无法达到理想的消能效果。采用整体水工模型试验,比较研究传统设计方案和跌坎+传统T形墩、跌坎+改良T形墩的两个优化方案,对比分析了消力池内流速分布、出池流速大小、消力池消能率情况。试验结果表明中高水头、大流速的底流消力池中,跌坎+改良T形墩联合消能工有效降低了出池流速,提高了消力池消能率,能达到消能防冲的目的,为工程设计提供了可靠依据。The spillway dam of Baishui Project is a middle head discharge structure,with energy dissipation by hydraulic jump.Due to the influence of the downstream topography and construction layout,the length of the dissipating pool is limited,and the traditional dissipating pool cannot achieve the ideal energy dissipation effect.In this paper,the hydraulic model test is used to compare the original design scheme with two optimization schemes of the drop sill+traditional T-type baffle,the drop sill+modified T-type baffle.The flow velocity distribution in the stilling basin,outflow velocity of stilling basin,and energy dissipation efficiency are analyzed.The results show that in the mid-high-head,high-flow underflow stilling basin,the combined energy dissipator of the the drop sill+modified T-type baffle effectively reduces the flow velocity of the outflow pool,improves the energy dissipation efficiency of the stilling basin,can achieve the purpose of energy dissipation and erosion control,which serves as a reliable basis for similar projects.

关 键 词：T形墩 跌坎 底流消能 模型试验 

分 类 号：TV131.61[水利工程—水力学及河流动力学]