溢流槽对定期冲洗式沉沙池沉淀效率的影响分析研究  

Study on effect of spillway trough on deposition efficiency of intermittent scouring sand basins

作　　者：刘焕芳[1] 宗全利[1] 

机构地区：[1]石河子大学水利建筑工程学院

出　　处：《泥沙研究》2007年第1期44-48,共5页Journal of Sediment Research

基　　金：教育部优秀青年教师资助计划项目(1862);石河子大学科学技术研究发展计划(ZRKX2005080);石河子大学高层次人才科研启动资金专项(RCZX200538)

摘　　要：通过在溢流堰上沿水流方向加设溢流槽对传统沉沙池进行了改进,以提高沉沙池的沉淀效率;从理论上分析了溢流槽对溢流堰水流吸出高度和出池水流含沙量的作用,并通过模型试验进行了验证,结果表明:加设溢流槽后,沉沙池的沉淀效率有了大幅度的提高,溢流堰的出池水流平均含沙量最大降幅可达94.8%;最后根据试验结果,给出了溢流槽的设计方法。In order to improve the deposition efficiency, the traditional sand basin has been improved by adding a spillway trough on spillway crest along the flow direction. The influence of spillway crest＇ s suction head and sediment concentration, which is influenced by spillway trough, have been analyzed theoretically and verified by model experiment. The results of experiment indicate that the tion efficiency has been improved greatly, and the biggest fall range of spillway crest＇ s sediment concentration is about 94.8 percent after adding spillway Finally based on the results of experiment, the design method of spillway trough is given.

关 键 词：沉沙池 溢流槽 沉淀效率 

分 类 号：TV142[水利工程—水力学及河流动力学]