The Study And Application Of GIS-based Urban Water Distribution Network Information System

With the acceleration of the urbanization, the size and scope of urban water distributionnetworks are fast increasing, and the networks of pipelines are becoming more and morecomplex. The obsolete labor management can’t meet the requirement of rapid development ofwater distribution network(WDN), for it causes not only great waste of water resources butalso substantial economic losses. Therefore, it is imperative to improve the management andservice mode of water supply enterprise with geographic information system(GIS)technology.A geographic information system (GIS) integrates hardware, software, and data forcapturing, managing, analyzing, and displaying all forms of geographically referencedinformation.The characteristics of different GIS development systems were analyzed. As thecomponent GIS is simple, flexible, cost-effective to perform powerful functions, it is used todevelop the information system of WDN. During the system development, the managementdemands of WDN was considered, component GIS software SuperMap Objects6.0was usedas the development platform, Microsoft SQL Server2005was used as the property database,and SuperMap SDB+was used as the spatial database.The Visual C#language was used tofulfil the second development of the urban water distribution network information system withcomponet GIS technology. System offers not only the basic function of data conversion, querystatistics and spatial analysis, but also the professional function of critical incident analysisand cross section analysis.In the system, the information of WDN can be inquired quickly andefficiently, and the decision support for valve shutoff can be obstained when WDN was inaccidents.The system offers a good platform for the information management of WDN.