排沙漏斗截沙率计算  

Calculation of interception efficiency of sand funnel

作　　者：李琳[1] 牧振伟[1] 周著[1] 

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052

出　　处：《水利水电科技进展》2007年第4期50-54,共5页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(59379394)

摘　　要：排沙漏斗是经过15年系列模型试验及原型观测研究成功的排沙设施,该设施工程设计时的截沙率一般通过试验测得。文章根据多年原型工程的运行经验,分析了影响排沙漏斗截沙率高低的主要因素,通过量纲分析给出了各因素与截沙率之间的函数关系,结合室内系列模型试验,运用数值分析的方法推导出排沙漏斗截沙率的计算公式,并利用实际工程的原型观测资料对所推导的公式进行对比验证。结果表明,该公式的计算误差不超过±5%,可供今后排沙漏斗工程设计计算参考。The sand funnel is a new sand removal facility which is developed from 15 years＇ model tests and prototype observation, and its sand interception efficiency during the engineering design is generally obtained by model tests. Based on many years＇ experiences from the operation of practical projects, the main factors influencing the sand interception efficiency were analyzed, and their relationships were given by dimensional analysis. In combination with the laboratory model tests, a calculation formula for the interception efficiency of the sand funnel was deduced by numerical analysis, and it was verified by some prototype observation data of actual projects. The results show that the calculation error of the formula is in the range of ± 5 %, and therefore, the calculated result can provide some references to sand funnel design.

关 键 词：排沙漏斗 截沙率 量纲分析 模型试验 数值分析 

分 类 号：TV149[水利工程—水力学及河流动力学]