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1、 南水北调中线图#TRS_AUTOADD_1220932094473 MARGIN-TOP: 0px; FONT-SIZE: 12pt; MARGIN-BOTTOM: 0px; LINE-HEIGHT: 1.5; FONT-FAMILY: 宋体#TRS_AUTOADD_1220932094473 P MARGIN-TOP: 0px; FONT-SIZE: 12pt; MARGIN-BOTTOM: 0px; LINE-HEIGHT: 1.5; FONT-FAMILY: 宋体#TRS_AUTOADD_1220932094473 TD MARGIN-TOP: 0px; FONT-SIZE: 12pt
2、; MARGIN-BOTTOM: 0px; LINE-HEIGHT: 1.5; FONT-FAMILY: 宋体#TRS_AUTOADD_1220932094473 DIV MARGIN-TOP: 0px; FONT-SIZE: 12pt; MARGIN-BOTTOM: 0px; LINE-HEIGHT: 1.5; FONT-FAMILY: 宋体#TRS_AUTOADD_1220932094473 LI MARGIN-TOP: 0px; FONT-SIZE: 12pt; MARGIN-BOTTOM: 0px; LINE-HEIGHT: 1.5; FONT-FAMILY: 宋体/*-JSON-:l
3、ine-height:1.5,font-family:宋体,font-size:12pt,margin-top:0,margin-bottom:0,p:line-height:1.5,font-family:宋体,font-size:12pt,margin-top:0,margin-bottom:0,td:line-height:1.5,font-family:宋体,font-size:12pt,margin-top:0,margin-bottom:0,div:line-height:1.5,font-family:宋体,font-size:12pt,margin-top:0,margin-b
4、ottom:0,li:line-height:1.5,font-family:宋体,font-size:12pt,margin-top:0,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,给出了采纳Hazen-Williams公式和Manning公式计算的误差;说明了误差产生的缘由;举荐了计算大口径管道摩阻损失的公式。最终建议南水北调工程4m直径PCCP管道制造出来后应马上进行水力学试验确定其肯定粗糙度值。 关键词:南水北调;PCC
5、P;摩阻损失 中图分类号:TV68;TV222 文献标识码:B 文章编号:1673-1683(2022)01-0231-04 Friction Loss for the PCCP Pipe of the South-to-North Water Transfer (Middle Route)Project LIU Jin,WANG Dong-li,YANG Jin-xin (Beijing Municipal Institute of Hydraulic Engineering Planning Design and Research,Beijing 101044,China) Abstrac
6、t:Based on field investigation and literature review,the calculation methods of friction loss for the PCCP pipe around the world were collected and analyzed.The three formulas typically uesd to calculate friction loss were presented and compared.An appropriate formula used to calculate friction loss
7、 for the big diameter PCCP pipe was recommended.Finally,the hydraulic test was suggested to acquire the relative roughness of the PCCP pipe. Key words:South-to-North Water Transfer;PCCP;friction loss 参考文献: 1成都科技高校.水力学(上册)M.重庆:人民教化出版社,11013. 2清华高校.水力学(上册)M.北京:高等教化出版社,11015. 3袁前盛,徐运海.大口径混凝土管水力摩阻的试验探讨J
8、.人民黄河,11015,(7):29-30. 4American Water Works Association.Concrete Pressure PipeM.America:11019. 5Fabian A.Bombardelli,Marcelo H.Garcia.Hydraulic Design of Large-Diameter PipeJ.Journal of Hydraulic Engineering,ASCE,2003,11:839-846. 作者简介:刘进(11014-),女,重庆人,工程师,主要从事水利工程设计探讨工作。 来源:南水北调与水利科技2022年第1期 第5页 共5页第 5 页 共 5 页第 5 页 共 5 页第 5 页 共 5 页第 5 页 共 5 页第 5 页 共 5 页第 5 页 共 5 页第 5 页 共 5 页第 5 页 共 5 页第 5 页 共 5 页第 5 页 共 5 页