Study On Prevention And Control Hazard Information System For Trafficlines Of Sichuan Province

After a review of the development of GIS, the general situation of Sichuan Province 's traffic lines, along with the GIS application and prospect on geologic hazards and traffic managements is introduced in this thesis. Based on the discussion above, the significance and research of Prevention and Control Hazard Information System for Traffic Lines of Sichuan Province are put forward. Then, the characteristics, classifications ' and spatial-temporal distribution characteristics of mountain traffic lines disasters are involved in the thesis.Whereafter, based on the analysis on the flood influence for traffic lines, the research is centered on the following parts: Firstly, the destroying modes, reasons and mechanism of flooded lines are discussed, and the frameworks and countermeasures of preventing and controlling hazards system are put forward; Secondly, the ways of region forecasting for the landslide are analyzed and the automation of landslide forecast for certain site through visual programming is realized. Furthermore, the function of dynamic segmentation in Arc View is made use of to realize the forecast result's visualization; Thirdly, the reasons and patterns of roadbed subsidence are discussed and the methods of forecasting subsidence based on the GM (1,1) model are put forward. Then the applications of the ArcView software and its extended module on the study of roadbed subsidence are debates upon; Fourthly, an analysis on the sources of flood for traffic lines, which situate in the reservoir coverage area, is given. The predicting performance of defense structure's anti-flood ability using quantifying theory is discussed; Fifthly, a managing method of preventing and controlling hazards for traffic lines based on risk estimation is offered and the division of flood danger zones is probed.The develop objectives of Prevention and Control Hazard Information System for Traffic Lines of Sichuan Province aimed at the problems of existence systems are brought forward, the system's framework, function settings and developing way are analyzed, and the partial functions of this system are performed on the ArcView platform in this thesis.