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《《南水北调与水利科技》:南水北调中线工程槐河(二)渡槽水力特性试验研究(戴梅 陈新桥)(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》:南水北调中线工程槐河(二)渡槽水力特性试验研究(戴梅陈新桥)(摘要)《南水北调与水利科技》:南水北调中线工程槐河(二)渡槽水力特性试验研究(戴梅陈新桥)(摘要) #TRS_AUTOADD_1219201736031{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋体}#TRS_AUTOADD_1219201736031P{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE
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5、in-top":"0","margin-bottom":"0"}}--**/摘要:南水北调中线总干渠上渡槽等建筑物上的分配水头有严格要求。为选取经济合理的渐变段型式和管理调度运用方式,需通过水工模型试验对原设计渡槽的进出口连接型式和渡槽的运用方式进行优化。该试验通过对渡槽进、出口不同墩头形状和上、下游渐变段不同型式的研究比较,认为在缓流状态下,流线型墩头和圆型墩头的水头损失基本相同。设计流量下进口直线扭曲面型渐变段的水头损失系数小于反弯扭曲面型渐变段的水头损失系数,出口直线扭曲面型渐变段的水头损失系数与反弯扭曲面型渐变段的水头损失系数基本相同。渡槽单联过
6、水时过流量不宜太大,闸门开启时第一开度不宜过大。试验成果可供同类工程设计参考。
关键词:渐变段;糙率;水头损失;闸门开度
中图分类号:TV68;TV32文献标识码:B文章编号:1672-168301-0194-03
HydraulicPropertyExperimentofHuaiRiver(Ⅱ)AqueductinMiddleRouteofSouth-to-NorthWaterTransferProject
DAIMei,CHENXin-qiao
(HebeiInvestigationResearchInstituteofWaterCons
7、ervancyHydropowerMinistryofWaterResources,Tianjin300250,China)
Abstract:ThereisastrictrequestonthewaterheadallocationofaqueductinmainchannelofMiddleRouteofNorth-to-SouthWaterTransferProject.Forchoosingeconomicallyandsuitabletransitiontypeandmanagementscheme,itshouldtobeoptimize
8、dtheoriginaldesignofconnectiontypeofout-