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《《南水北调与水利科技》：南水北调中线pccp管道的摩阻损失计算分析（刘进 王东黎 杨进新）（摘要）》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、《南水北调与水利科技》：南水北调中线PCCP管道的摩阻损失计算分析（刘进王东黎杨进新）（摘要） #TRS_AUTOADD_1220932094473{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋体}#TRS_AUTOADD_1220932094473P{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋体}#TRS_AUTOA
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5、margin-bottom":"0"}}--**/摘要：在大量收集与分析国内外PCCP管道摩阻损失计算方法的基础上，论述了3个常用摩阻损失计算公式的起源；分析了各公式的适用条件。并以南水北调中线PCCP管道摩阻损失计算为例，给出了采用Hazen-Williams公式和Manning公式计算的误差；解释了误差产生的原因；推荐了计算大口径管道摩阻损失的公式。最后建议南水北调工程4m直径PCCP管道制造出来后应立即进行水力学试验确定其绝对粗糙度值。
关键词：南水北调；PCCP；摩阻损失
中图分类号：TV68；TV222文献标识码：B文章编号
6、：1672-168301-0231-04
FrictionLossforthePCCPPipeoftheSouth-to-NorthWaterTransfer(MiddleRoute)Project
LIUJin,WANGDong-li,YANGJin-xin
(BeijingMunicipalInstituteofHydraulicEngineeringPlanningDesignandResearch,Beijing100044,China)
Abstract:Basedonfieldinvestigationandl
7、iteraturereview,thecalculationmethodsoffrictionlossforthePCCPpipearoundtheworldwerecollectedandanalyzed.Thethreeformulastypicallyuesdtocalculatefrictionlosswerepresentedandcompared.AnappropriateformulausedtocalculatefrictionlossforthebigdiameterPCCPpipewasrecommended.Fina
8、lly,thehydraulictestwassuggestedtoacquiretherelativeroughnessofthePCCPpipe.
Keywords:South-to-
