冲沙槽式渠首导水墙结构优化试验研究  

Optimization Experiment on Structure of Guide Wall of Sluicing Chamber Type Canal

作　　者：崔忠[1] 侯杰[1] 孙鑫[1] 

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052

出　　处：《新疆农业大学学报》2008年第3期86-90,共5页Journal of Xinjiang Agricultural University

基　　金：新疆水利水电工程重点学科基金项目(XJZDXK-2002-10-05)

摘　　要：通过5种不同高度的导水墙进行试验,导水墙高度分别为0.7,1.0,1.5,2.0,2.7 m。对冲沙槽式渠首导水墙的高度进行结构优化。导水墙高度的改变对冲沙槽槽内水力特性及防沙效果有较大的影响。随着导水墙高度增大,导水墙外侧水流的侧向流就越明显;冲沙槽槽内水流流态就越复杂;引水口进水比就越大。当冲沙槽高宽比K=0.4,进水口进沙比存在一个最小值。即冲沙槽高宽比K=0.4,渠首引水防沙效果最好。The paper selects 5 kinds of guide walls which is 0. 7,1. 0,1. 5,2. 0,2. 7 m respectively to conduct the experimental study with the structure optimization of guide wall height of sluicing chamber type canal. The variety of guide wall height has a tremendous influence on the hydraulic characteristic and sand prevention effect. The higher the guide wall is, the more obviously the lateral stream of lateral flow outside guide wall becomes,the more complex flow pattern of the sluicing chamber becomes , and the greater the inlet of water diversion ratio is. When ratio of the height to width of the sluicing chamber is K = 0.4, sand diversion ratio has a minimum value,sand prevention effect is the best.

关 键 词：冲沙槽 导水墙 分水比 分沙比 

分 类 号：TV661[水利工程—水利水电工程]