南水北调与水利科技2017，Vol.15Issue(5)：156-163,8.DOI:10.13476/j.cnki.nsbdqk.2017.05.0024
小浪底水库泥沙管道高效输送的合理参数分析
Rational parameter analysis of high-efficiency pipeline transport of sediment in Xiaolangdi Reservoir
摘要
Abstract
Based on previous research results as well as the scour and deposition changes and suspension characteristics of sediment in the pipeline,we identified the non-depositing critical velocity of pipeline transport of sediment considering the real-time changes in sediment concentration and particle size distribution along the pipeline.We compared the measured values with the calculated values of different models,and chose Fei Xiangjun's model to calculate the non-depositing critical velocity of pipeline transport.Finally,on both theoretical and practical bases,we proposed the pipe diameter and sediment concentration for high-efficiency pipeline transport of sediment in Xiaolangdi Reservoir,which can be a reference for future testing or production practices.We proposed the high-efficiency transport parameters for two different diameters of 0.325 m and 0.63 m.The two conditions both had the following parameters:a sediment concentration of 620 kg/m3,a median particle size of 0.051 2~0.062 9 mm,and 0.14 mm D90.The transportation velocity can be adjusted between 1.75~2.08 m/s and 2.08~2.2 m/s.The corresponding largest sand discharge quantity per month was 89500 tons and 347200 tons.关键词
水库泥沙/管道输送/临界不淤流速/高效输沙Key words
eservoir sediment/pipeline transport/non-depositing critical velocity/high-efficiency sediment transport分类
建筑与水利引用本文复制引用
曾杉,秦毅,李时..小浪底水库泥沙管道高效输送的合理参数分析[J].南水北调与水利科技,2017,15(5):156-163,8.基金项目
水利部公益性行业科研专项经费项目(201301063)National Public Welfare Foundation of the Ministry of Water Resources of China(201301063) （201301063）
