Abstract: The type of leakage network in water pipe network was introdued． The leakage volume model and estimation methods of pipe network node were analyzed． A new leakage volume estimation method was established based on the tool of GIS network． The study focused on pipeline networks topology relation． The amount of pipe network node leakage volume was estimated by using DEM to caculate network nodes elevation and the leakage model method.It was proved that it was an efficient way to estimate the amount of leakage based on GIS pipeline network nodes by example．

Key words: water pipe network, leakage volume model, network topology, GIS, digital elevation model( DEM)

摘要： 介绍了给水管网中漏损网络的类型，分析了传统给水管网节点漏损量模型和估算方法的不足，通过GIS空间 分析强大功能的特点，提出了一种以GIS与DEM相结合的新的给水管网节点漏损量估算方法;重点研究了基于GIS 的网络分析建立的给水管网拓扑关系，并利用DEM模型计算网络节点处高程，结合漏损模型的计算方法估算出给 水管网节点处漏损量;实例验证，说明基于GIS的给水管网节点漏损量估算是一种高效的方法。

关键词: 给水管网, 漏损量模型, 拓扑网络, GIS, DEM模型