The current paper reports on a case study investigating water distribution system management in emergency conditions when it is necessary to seal off a zone with isolation valves to allow repair. In these conditions, the pressure-driven analysis (PDA) is considered to be the most efficient approach for the analysis of a water distribution network (WDN), as it takes into account whether the head in a node is adequate to ensure service. The topics of this paper are innovative because, until now, previous approaches were based on the analysis of the network behaviour in normal conditions. In emergency conditions, it is possible to measure the reliable functioning of the system by defining an objective function (OF) that helps to choose the optimal number of additional valves in order to obtain adequate system control. The OF takes into account the new network topology by excluding the zone where the broken pipe is located. The results show that the solution did not improve significantly when the number of valves reached a threshold. The procedure applied to other real case studies seems to confirm the efficiency of the methodology even if further examination of other cases in different conditions is necessary. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY 4.0), which permits copying, adaptation and redistribution, provided the original work is properly cited (http://creativecommons.org/licenses/by/4.0/). doi: 10.2166/hydro.2019.134 ://iwaponline.com/jh/article-pdf/22/4/681/714821/jh0220681.pdf A. Fiorini Morosini (corresponding author) O. Caruso P. Veltri Dipartimento di Ingegneria Civile, University of Calabria, Rende 87036, Italy E-mail: attilio.fiorinimorosini@unical.it

中文翻译：

---

使用隔离阀在 PDA 条件下管理配水系统：真实网络案例研究

当前的论文报告了一个案例研究，调查紧急情况下的配水系统管理，当需要用隔离阀密封一个区域以进行维修时。在这些条件下，压力驱动分析 (PDA) 被认为是分析配水网络 (WDN) 的最有效方法，因为它考虑了节点中的水头是否足以确保服务。本文的主题具有创新性，因为到目前为止，以前的方法都是基于对正常条件下网络行为的分析。在紧急情况下，可以通过定义一个目标函数 (OF) 来衡量系统的可靠运行，该函数有助于选择最佳的附加阀门数量，以获得足够的系统控制。OF通过排除破损管道所在的区域来考虑新的网络拓扑。结果表明，当阀门数量达到阈值时，该解决方案并没有显着改善。应用于其他真实案例研究的程序似乎证实了该方法的效率，即使需要在不同条件下进一步检查其他案例。这是一篇根据知识共享署名许可 (CC BY 4.0) 条款分发的开放获取文章，该许可允许复制、改编和重新分发，前提是正确引用原始作品 (http://creativecommons.org/licenses/by/ 4.0/)。doi: 10.2166/hydro.2019.134 ://iwaponline.com/jh/article-pdf/22/4/681/714821/jh0220681.pdf A. Fiorini Morosini (通讯作者) O. Caruso P. Veltri Dipartimentio dipartimento dipartimento dipartimento dipartimento