Urban Safety Planning And Emergency Development Of Geographic Information Systems

City safety plan and emergency rescue of major accident not only need the cooperation of lots of departments and personnel, but also need the support of the numerous space data of city and object, So modern information management method must be used. GIS can offer an applicable research method for city safety plan and emergency rescue of major accident.According to the requirement of the city safety plan and emergency rescue of major accident, this paper discussed that how to make use of GIS method to carry out the city safety plan and the design, research and development of the GIS whose objective is to control the risk of the major hazard installation and to prevent the happen of city major accident and reduce the loss.The content of this paper includes three aspects.1. System design of city safety plan and emergency geographic information system.Research the structure and function of the software system; Accomplish system requirement analysis and design.2. Research of city safety plan and emergency database.Research the structure of city safety plan and emergency database and the relationship of data structure and data; Accomplish the requirement analysis and design of city safety plan and emergency database.3. Research of city safety plan and the visualization technology of emergency Research the visualization mode and method of city safety plan and emergencyobject.