水力模型在城市供水管网施工改造中的应用研究  

Research on the Application of Hydraulic Models in the Construction and Renovation of Urban Water Supply Networks

作　　者：郑重 宋亚路 张瑞涛 ZHENG Zhong;SONG Ya-lu;ZHANG Rui-tao(Zhejiang Yugong Information Technology Co.,Ltd.Hangzhou,Zhejiang 310052,China)

机构地区：[1]浙江禹贡信息科技有限公司,浙江杭州310052

出　　处：《水电站机电技术》2023年第6期1-3,138,159,共5页Mechanical & Electrical Technique of Hydropower Station

基　　金：浙江省重大社会公益计划项目,流域性重大洪涝灾害监测预警与风险防控的关键技术及装备研发(2023C03189)。

摘　　要：针对城市平均管网漏损率居高不下,达不到区域居民对水量与水压的要求等问题,结合规划方案,建立区域供水管网水力模型,对新建管网进行优化。通过EPANET,对研究区内68.696 km的新建管网进行概化,管网粗糙系数取值145,水源取定水头,计算总历时24 h,时间步长15 min;分别采用研究区域北部新增加压泵站、不增设加压泵站两种不同的工况,来模拟分析研究区域供水管网压力的变化;实践应用表明,通过模型模拟和优化设计,研究区域增设加压泵站后,满足了区域居民对水量与水压的要求,但在后续施工改造中,需在南部管网中增加减压阀,减压供水。通过本次模拟计算,为后续工程设计、施工改造和运行管理提供科学依据。In urban areas,the persistently high average water network leakage rate has become a significant challenge,as it fails to meet the requirements of regional residents for water volume and water pressure.We established a hydraulic model of the regional water supply pipeline network based on the planning plan to optimize the new pipeline network.Through EPANET,a new pipeline network of 68.696km in the research area was generalized,with a roughness coefficient of 145 and a fixed water head for the water source.The total calculation time was 24 hours,with a time step of 15 minutes;Two different operating conditions were used to simulate and analyze the changes in the pressure of the water supply network in the study area,one has added a new pressure pump station in the northern part of the study area and the other one has not added a pressure pump station;Practical applications have shown that,through model simulation and optimization design,the addition of a booster pump station in the research area meets the requirements of local residents for water volume and pressure.However,in subsequent construction and renovation,it is necessary to add a pressure reducing valve in the southern pipeline network to provide pressure reducing water supply.Through this simulation calculation,scientific basis is provided for subsequent engineering design,construction renovation,and operation management.

关 键 词：水压不足 管网水力模型 优化设计 施工改造 

分 类 号：TU991.33[建筑科学—市政工程]