南水北调西线阿安引水隧洞水力学试验研究  

Hydraulic Test Study on Access Tunnel A-AN

作　　者：李国庆[1] 李冰[1] 

机构地区：[1]华北水利水电学院,郑州450011

出　　处：《南水北调与水利科技》2007年第2期9-11,共3页South-to-North Water Transfers and Water Science & Technology

基　　金：黄河水利规划勘察设计有限公司委托科研项目

摘　　要：南水北调西线阿安引水隧洞具有水头高、流速急、定流量、变闸门开度、水位变幅大等特点,借助于水工模型试验对输水洞在不同工况运用下的水流流态、泄流能力、压力特性及关键部位的空化特性、闸门区水流特性、消能工体型等进行了较系统的研究、分析,并对洞内消能工体型进行优化。在工作闸门区突扩跌坎处,选择合适的体型并严格控制表面不平整度,可达到防止或减小空化的目的。The access tunnel A-AN possesses the characters of high head, high velocity, constant charge, changeable strobe opening and large variation range of water level. The researches including flow form, discharge capacity, pressure properties, cavitation characteristics at some key positions, flow characteristics at the strobe as well as the configuration of the energy dissipater at different heads and corffiguration modification of the energy dissipater in tunnel were performed by hydraulic model tests. Choosing suitable configuration and controlling the unevenness of the surface at the sudden enlargement drop-sill after the operating gate, this tunnel may avoid or mitigate cavitation.

关 键 词：引水隧洞 水流流态 体型优化 突扩跌坎 模型试验 

分 类 号：TV135[水利工程—水力学及河流动力学]