Research Of Air Diffusion System Of Spilled Gas Chemicals Based On GIS

With the increasing transportation of Bulk gas Chemicals, the spilling accident of Bulk Liquid Chemicals took place again and again during its storage and transportation. These accidents not only seriously threat the safety of people's life and property, but also possibly damage the environment of water, air and land. In order to rapidly and effectively predicting the air diffusing area of the spilled gas Chemical, and giving corresponding emergency decisions, we make a research on The Air Diffusion System of Spilled gas Chemicals Based on GIS. We hope our study can give a little reference for the controlling of shipping Chemicals' polluting accidents.We the developed and studied technology of GIS, used it on the spilling accidents of bulk gas chemicals, and made a great progress. In this paper, Mapinfo Profession 6.0 was applied to build and manage space geographical information; Mapinfo MapX4.5 was used as a ActiveX Control to model and describe the air diffusing area of the spilled gas chemical, by the technology of OLE, made used of the integrating environment of Visual Basic 6.0, we finished developing research on the air diffusion system of spilled gas chemicals based on GIS. The system can dynamically show the diffusion range of spilled gas chemicals on computer screen after inputting necessary parameters.The paper include 7 chapters. The 5th chapter is most important part. In this chapter, the developing and building procedures of the air diffusion system of spilled gas chemicals based on GIS is introduced in detail, including: the whole design of system, establishing mathematic models library, establishing and managing database, the developing tool, important programming techniques.