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介绍了给水管网可靠度计算的两种方法，重点介绍了最小割集法。首次提出了给水管网计算中管件可用度和平均可用度的概念，并建立了相应的数学模型。通过管网故障状态下水力模拟仿真模块，计算节点和系统的最小割集，利用可用度计算模块，计算出组件的可用度和不可用度，进而求得节点和系统的可靠度。
Two methods to calculate the reliability of water supply network are introduced. The method of minimum cut set is introduced emphatically. For the first time, the concept of availability and average availability of pipe fittings in the calculation of water supply network was proposed and the corresponding mathematical model was established. Through the hydraulic simulation module under the fault condition of pipeline network, the minimum cut set of nodes and systems is calculated. The availability calculation module is used to calculate the availability and the unavailability of components, and then the reliability of nodes and systems is obtained.