某某某省###县城区供水管网改造工程可行性研究报告研究院有限公司目录TOC\o"1-2"\u1概述PAGEREF_Toc191564980\h11.1项目背景PAGEREF_Toc191564981\h11.1.1项目名称PAGEREF_Toc191564982\h11.1.2项目建设地点PAGEREF_Toc191564983\h11.1.3项目建设单位、法人代表PAGEREF_Toc191564984\h11.1.4项目提出的背景PAGEREF_Toc191564985\h11.2编制依据、原则和范围PAGEREF_Toc191564986\h21.2.1编制依据PAGEREF_Toc191564987\h21.2.2编制原则PAGEREF_Toc191564988\h21.2.3编制范围PAGEREF_Toc191564989\h21.3投资估算与资金筹措PAGEREF_Toc191564990\h21.4项目概况PAGEREF_Toc191564991\h31.4.1项目建设规模及目标PAGEREF_Toc191564992\h31.4.2主要建设条件PAGEREF_Toc191564993\h31.5城市基本概况PAGEREF_Toc191564994\h31.5.1基本概况PAGEREF_Toc191564995\h31.5.2自然条件PAGEREF_Toc191564997\h41.5.3县城供水水源PAGEREF_Toc191564998\h51.6城区基本概况PAGEREF_Toc191564999\h71.7供水管网改造的必要性及紧迫性PAGEREF_Toc191565000\h71.7.1县城供水现状PAGEREF_Toc191565001\h71.7.1.1现有供水设施PAGEREF_Toc191565002\h71.7.1.2供水现状PAGEREF_Toc191565003\h81.7.2某某县城供水设施和管网主要存在的问题PAGEREF_Toc191565004\h81.7.3供水管网改造的必要性及紧迫性PAGEREF_Toc191565005\h82某某县城给水工程规划改造PAGEREF_Toc191565006\h102.1某某县城用水量预算PAGEREF_Toc191565007\h102.2用水规模的确定PAGEREF_Toc191565008\h102.3供水水源PAGEREF_Toc191565009\h102.4净水厂PAGEREF_Toc191565010\h102.5供水管网PAGEREF_Toc191565011\h112.6供水设施布局PAGEREF_Toc191565012\h113供水管网改造方案PAGEREF_Toc191565013\h123.1供水管网改造范围PAGEREF_Toc191565014\h123.2供水管网的功能要求PAGEREF_Toc191565015\h123.2.1水密性能高PAGEREF_Toc191565016\h123.2.2降低供水管网的二次污染PAGEREF_Toc191565017\h123.2.3水力条件好PAGEREF_Toc191565018\h123.2.4建设投资省PAGEREF_Toc191565019\h123.3供水管网布置原则PAGEREF_Toc191565020\h133.4供水管网系统的平差PAGEREF_Toc191565021\h133.4.1主要设计参数PAGEREF_Toc191565022\h133.4.2节点流量及水头损失计算PAGEREF_Toc191565026\h133.4.3管网的管道布置PAGEREF_Toc191565028\h143.4.4最高日最高时管网平差计算PAGEREF_Toc191565029\h143.4.5最高日最高时消防平差校核PAGEREF_Toc191565030\h143.4.6最高日最高时事故平差校核PAGEREF_Toc191565031\h154设计计算PAGEREF_Toc191565032\h164.1最高日最高时管网平差最不利点校核计算PAGEREF_Toc1915