Design And Realization Of Pipe Bursting Analysis Function Based On GIS

With the continuous development of city construction, because of the intricate and complicated,the pipeline of transmission and distribution enterprise have the occurrence of burst pipes and other accidents frequently. Once the gas leak can cause casualties and property losses. Due to the complexity of the gas distribution system,many cities have applied the GIS(Geographic Information System)to the city gas management and achieved the gleichschaltung of drawings,equipment information, improved the work efficiencyThe city gas pipeline network is one of the important infrastructure to support and ensure the city’s economic development and people’s lives. In city pipe network, the frequency of pipeline tube rupture greatly increased, harmful levels intensified and to cause the waste of resources.Affecting the daily life of residents seriously.It is caused by pipeline corrosion aging pipe network and pipe pressure and other factors. Therefore, after the city gas pipe explosion occurred, the timely analysis of the repair and valve clearance program, the statistics of affected users, which are extremely important and urgent. Adopting SQL Server2000as the database management system, MapInfo MapX as the development platform, Microsoft Visual Studio.Net as the development tool.This article is based the MapXtreme platform and computer technology in the graph theory methods, to establishe the city gas pipeline network topology relationship and adopt the breadth-first search to study the city gas pipeline network bust. And on this basis,optimizing the analysis algorithms.Searching out the point of accident,valve clearance program and the impact users efficiently and accurately. Ultimately realized the maintenance of critical point timely and accurately and improved the level of operation and management of city gas pipeline networks. The practical application shows,the proposed method in this paper have the advantages of simple, fast, high efficiency and high accuracy.It is a suitable analysis method of the city gas pipeline network bust. Adopting SQL Server2000as the database management system, The explosion and leakage point can be located through the analysis of the status of gas conveying information from the Supervisory Control and Data Acquisition system. Damaged equipments and devices can be confirmed with the application of GIS;The technical parameters on manufacturer, model, material quality, size, type of the damaged equipments and devices can be obtaining through the pipe network database, the electronic listing for repair materials can be made and sent to the material warehouse. On the basis of the urban traffic network, with the current position of the emergency crew as starting point, leak point as destination, material warehouse as a necessary station, the optimum route is calculated by the shortest path analysis method of GIS. Through the above measures, the repair works can be finished quickly, the labor intensity is reduced, repair efficiency is improved and the direct or indirect losses are minimized possibly.Research on the subject, not only improves the efficiency of the city gas pipe burst analysis and reduces staff participation, but also provides a reference for other gas enterprises to build gas pipelines GIS.