In order to avoid the complicated calculation of hydraulic multi-source network,based on geographic information system( GIS),the network of multi-heat sources and multi-loops complex heating was modeled and simulated. By using geodatabase data model,the relating matrix and basic loop matrix of heat network were quickly set up,and hydraulic regime of heating network with the basic circuit was calculated. When pipebursting accident occured in heating network,the valve-shut off scheme was researched by simulat...