Research On Reliability Of Municipal Water Supply Network

Along with the city modernized development, the city production and the life will rely on the water-supply system more and more,and the water distribution network is an important part of water-supply system,And its reliability has significant influence on social and economic benefits of the water-supply system as a whole. Therefore research on the water distribution network reliability and improve the reliability is very important.In this paper,the author present the theory of reliability systrmatically.According to the peculiarities of water distribution network ,the viewpoint dividing into two parts,one is the network's structural reliability and the other one is network's synthetical reliability.In the research of structural network's reliability,firstly on the basic of data ordering in the management of network failure reparation of Tianjin's aera,and study on the data by statiscal and analyzing means we can obtain the principal parameters for water distribution network reliability calculation.Then the author applies subassembly availability in network reliability calculation and derived some related formulations according to the fault rate and maintainability rate.In this paper,graph theory is introduced into calculating of water distribution network reliability,and get the reliability of water network by disjointed disposal minimum path.And based on model for the structural reliability the model for synthetical reliability established by carries on simulation for hydraulic condition. Finally, analyzes the influence margin of safety target the factor, and provide the basis for changes the extension of the city distribution network.