CAJ | 학술논문

本文基于水流挟沙理论和悬移质泥沙悬浮效率系数研究基础,建立了浑水管道输水临界不淤流速计算公式,通过6组不同含沙量和4种规格管径的临界不淤流速试验结果,分析了不同含沙量、管径、泥沙粒径和密度等因素对临界不淤流速的影响,利用试验数据确定了泥沙悬浮效率系数计算方法,并对临界不淤流速计算公式进行了验证,结果表明计算公式具有较高的精度,计算值与实测值的最大相对误差为2.96%,能够满足管道输水灌溉工程的应用要求.
본문기우수류협사이론화현이질니사현부효솔계수연구기출,건립료혼수관도수수림계불어류속계산공식,통과6조불동함사량화4충규격관경적림계불어류속시험결과,분석료불동함사량、관경、니사립경화밀도등인소대림계불어류속적영향,이용시험수거학정료니사현부효솔계수계산방법,병대림계불어류속계산공식진행료험증,결과표명계산공식구유교고적정도,계산치여실측치적최대상대오차위2.96%,능구만족관도수수관개공정적응용요구.
Water delivery in irrigation pipeline is one of the most widely used water-saving irrigation engi?neering and technical measures in China at present. For muddy water (more sediment water) pipeline irriga?tion engineering planning, design and construction, non-deposit critical velocity is an important parameter. In this paper,based on the current carrying theory and sediment suspension efficiency coefficient research?es, a non-deposit critical velocity formula for muddy water pipeline has been established. With the results of non-deposit velocities in a series of experiments with six different sets of sediment concentration and four pipe diameters, a critical analysis of the influence from sediment concentration, pipe diameter, and density and grain size of sedimentation on non-deposit velocity was conducted. The calculation method of the sediment suspension efficiency coefficient was determined and verified by the test results. It proves that the calculation formula is valuable with high calculation accuracy, and the maximal relative error between actual non-deposit velocities and calculated ones is only 2.96%. Therefore,the calculation method present?ed in this paper is satisfactory for pipeline irrigation engineering applications.