地震时城市供水管网水力特性分析

研究地震导致渗漏的供水管网的水力特性,考虑节点流量随节点水压的动态变化,构建地震导致渗漏的供水管网水力模型.基于EPANET计算管网节点实际流量和水压,评价供水管网水力特性.案例分析表明,构建的模型和提出的水力计算方法是可行的,为城市供水管网抗震防灾管理提供借鉴.

The hydraulic features analysis of urban water supply network at earthquake

After a strong earthquake,there are some cases where nodal pressure is not sufficient for supplying the required demand in the water supply network,and the flow of water is less than that of demand before the earthquake . Water supply function at this time is whether the normal operation, which is important for urban disaster relief and urban infrastructure functional recovery. In this paper, based on hydraulic characteristics of the water supply network leakage, the node flow dynamically changing by water pressure is considered. Combining with EPANET to compute network nodes actual flow and pressure, Leakage hydraulic model of Water supply network is built in a possible earthquake. Combined with case studies, hydraulic calculation method proposed to build the model and predict water supply pipe network capacity , which provides reference for disaster management of urban water supply networks earthquake