无负压供水模式下管网水力模拟与安全评价分析  

Hydraulic Simulation and Safety Assessment of Secondary Water Supply System with Anti-Negative Pressure Facility

作　　者：王欢欢[1] 刘书明[1] 姜帅[2] 孟凡琳[1] 白璐[1] 

机构地区：[1]清华大学环境学院,北京100084 [2]北京市大兴区水务局,北京102628

出　　处：《环境科学》2013年第1期163-168,共6页Environmental Science

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07425-006)

摘　　要：近些年,无负压供水设备作为新型供水模式,在城市二次供水管网中广泛使用.本研究针对无负压供水对整个管网的影响并不明确的现状,分析了无负压供水模式对管网供水安全的影响,利用管网水力学模型,提出了一种无负压供水状态下的管网水力学模拟方法,应用该方法建立了一种用以确定管网可承受安装无负压供水设备的最大节点数的方法,将此方法应用于两个算例管网,其结果表明算例管网中分别有67%、89%的节点不适合安装无负压供水设备.该方法简单实用,推荐在管网设计与规划中使用,以提高管网供水安全性.In the last few decades,anti-negative pressure facility（ANPF） has been emerged as a revolutionary approach for sloving the pollution in the Second Water Supply System（SWSS） in China.This study analyzed implications of the safety in SWSS with ANPF,utilizing the water distribution network hydraulic model.A method of hydraulic simulation and security assessment was presented which was able to reflect the number and location of nodes that can be installed in ANPF.Benchmark results through two instance networks showed that 67% and 89% of nodes in each network did not fit the ANPFs for installation.The simple and pratical algorithm was recommended in the water distribution network design and planing in order to increase the security of SWSS.

关 键 词：二次供水 无负压供水 水力模拟 节点压力 安全评价 

分 类 号：TU991.33[建筑科学—市政工程]