Abstract

Among the main concerns of water companies are to maintain the optimal performance of pipes in water distribution networks (WDNs); this is achieved by activities, such as renewal works, maintenance actions, pressure management and other improvement operations. Accordingly, determining the risk associated with pipes is useful when planning such renewal works. In this study, a model is developed to determine a pipe renewal strategy (PRS) based on the risk components (RCs) of each pipe. Hence, comprehensive criteria relating to pipe characteristics are assessed to determine the RCs. The developed model is based on a fuzzy-based, multi-criteria decision-making method, known as risk component-based water distribution system renewal (RC-WDSR). This is an improved version of the WDSR model, which was presented in 2018 by the authors of this study. To investigate the accuracy of the analysis of this model, two known WDNs – Anytown and Two-loop – were examined. The results indicate that the PRSs determined for the Anytown network reflects the pipe renewal priorities obtained from the WDSR model. Furthermore, in the Two-loop network, the PRSs obtained corresponded with the technical conditions of the pipes. Hence, it reveals that the results of the RC-WDSR are reliable when determining PRSs in WDNs.

摘要

水务公司的主要关注点之一是保持配水网络 (WDN) 管道的最佳性能；这是通过更新工程、维护行动、压力管理和其他改进操作等活动来实现的。因此，在规划此类更新工程时，确定与管道相关的风险是有用的。在这项研究中，开发了一个模型来根据每个管道的风险组件 (RC) 确定管道更新策略 (PRS)。因此，评估与管道特性相关的综合标准以确定 RC。开发的模型基于基于模糊的多标准决策方法，称为基于风险组件的配水系统更新 (RC-WDSR)。这是 WDSR 模型的改进版本，该模型由本研究的作者于 2018 年提出。为了调查该模型分析的准确性，我们检查了两个已知的 WDN——Anytown 和 Two-loop。结果表明，为 Anytown 网络确定的 PRS 反映了从 WDSR 模型获得的管道更新优先级。此外，在二环路网络中，获得的PRS与管道的技术条件相对应。因此，它表明在确定 WDN 中的 PRS 时，RC-WDSR 的结果是可靠的。