水资源与水工程学报2016，Vol.27Issue(1)：168-171,4.DOI:10.11705/j.issn.1672-643X.2016.01300
圆中环沉沙排沙池曲线型中心出水环堰试验研究
Research on center outlet ring in circular-rings of desilting and sediment ejection pool
摘要
Abstract
In order to improve the shortage of uneven distribution of flow velocity in circular-ring desilting and sediment ejection pool,the paper used physical model to study the center outlet ring.It also carried out structure optimization to center outlet ring.Under the condition of constant guarantee ring maximum height of weir,the paper adjusted the ring weir export from flat mouth to curve type 1 and type 2.Under three kinds of flow condition (2 m3/s,3 m3/s,4 m3/s) it measured the velocity over flow weir outlet.The results show that the type curve center weir ring can make the overflow dam line nearly velocity overall decline compared with that of flat mouth ring and is more uniform.From the analysis of curve type 1 and type 2 maximum,minimum and average flow velocity contrast,it is found that the falling of curve type 2 on circular-ring desilting and sediment ejection pool is more apparent,the fall of velocity in circular-rings weir for curve type 2 is better than that for curve type 1.The test can provide a certain reference for the design of circular-ring desilting and sediment ejection pool under different flows.关键词
圆中环沉沙排沙池/中心出水环堰/流速/结构优化Key words
desilting and sediment ejection pool of circular rings/center weir ring/velocity/structure optimization分类
建筑与水利引用本文复制引用
陈治锋,侍克斌,杨真,李燕波..圆中环沉沙排沙池曲线型中心出水环堰试验研究[J].水资源与水工程学报,2016,27(1):168-171,4.基金项目
新疆科技支撑计划项目(201233132) （201233132）
新疆水利水电工程重点学科基金资助项目(xjzdxk-2010-02-12) （xjzdxk-2010-02-12）
