文档介绍：I 嘉定新城主城区给水管网系统的可靠性分析摘要城市给水系统是城市生活的生命线, 在国民经济和人民生活中占有重要的地位。给水管网系统的可靠性研究是给水系统管理的重要组成部分,具有极为重要的理论和现实意义。给水管网系统是一个复杂多变的动态系统,如何计算组成管网的各个组件(主要是管段)的可靠度,分析管网的结构,找出管网可靠度与组件可靠度之间的关系式,进而求出整个系统的可靠度是系统可靠性分析的关键所在。根据大量的文献资料和前辈的研究表明,最小割集法是节点可靠度计算的最有效方法。系统可靠度决定于各节点的可靠度。通过对给水管网冗余数分量矩阵的计算确定节点的重要性系数是一种全新的尝试方法。然后,将它与正常情况下节点处要求的供水量相结合取为权函数,进而求出系统可靠度。这种方法把网络的拓扑结构在计算中充分的体现,进一步完善了给水管网系统可靠度的计算公式。嘉定新城主城区是嘉定新城的主体与核心。通过对其规划给水管网系统的可靠性分析,提出各种的整改建议意见,将为规划给水管网系统的进一步优化提供重要的理论依据,大大提高整个给水管网系统的可靠性和安全性,以帮助建设与“汽车嘉定”、现代化嘉定新城相匹配的城市供水基础设施。关键词: 给水管网,可用度,最小割集,节点可靠度,冗余数,系统可靠度 II RELIABILITY ANALYSIS OF WATER-DISTRIBUTION SYSTEMS OF JIADING NEW TOWN ABSTRACT Urban water-supply system is the lifelin e of city life. It is very important for national economy and life. Study of the reliability of water-distribution system is the part of the management of water-supply system and has the significant academic and practical meaning. Water-distribution system is a co mplex and flexible dynamic system. How to evaluate the reliability of th e each part, analyze, find out the connection, thus further to make clear the system re liability is the essential of all. As shown by many docum ents and predecessor’s researches, the method of minimal cut sets is the most efficient way for evaluating the nodes reliability. The system reliability depends on the nodes reliability. A new method is developed to calculate the redundanc y matrix to determine the weight coefficient of node. By co mbining the weight coefficient of node and the node flow, we can evaluate the system reliab ility. It makes the formula more perfect, by incorporating work topology structure into calculation. The main city is the core of Ji ading New Town. Based on the reliability analysis of Water-distribution system , we can provide suggestions. It may provide important theoretical basis for the optimal design of the Water- distribution system, and it may contribute to building of the Automobile city Jiading and Modern Jiading New Town. III KEY WORDS: wat