Research And Implementation On Visual Emergency Trainning System Of Blowout Based On GIS

Petrochemical industry is the foundation of China's energy industry, with the rapid development of industry in the production process is also emerging security incidents, these incidents usually cause serious human and property losses. Develop reasonable and effective contingency plans for emergency personnel in emergency drills in the face of unexpected events can make treatment decisions quickly, to reduce losses caused by the accident, making the distress to a reasonable hedge. The establishment of emergency drill system can satisfy the practical needs of the implementation process of the emergency exercise involving large amounts of data, including attribute data and spatial data, using GIS to support large data and image data processing, and processing speed, reliable and stability characteristics are very high the system can provide good support.At present in China, GIS (geographic information system) technology has been widely used in manyindustries safety management which, for the production of management has brought great convenience. Emergency command in the field of production safety, simulation and virtual reality technology, GIS technology to integrate is inevitable. The use of simulation and virtual reality technology, learn GIS thinking, to achieve three-dimensional scene visualization environment simulation, analysis, query, field work in order to meet the industry's growing demand management. G1S current research focused on the three-dimensional data structure (such as digital surface model, cross section, cylindrical entities, etc.) design, optimization and implementation, as well as the use of volume visualization techniques, three-dimensional function of the systemandmoduledesign and so on.Also described in geographic information systems often have time attributes of geographical objects,real state. Over time, the geographical characteristics of the object will change, and the Secretary will this change is great, but most of the geographic information system can not be a good combination of support for geographic objects and events handling time dimension.This blowout accident in Chongqing, for example, through the process of emergency exercise requirement analysis, system design, functional analysis and design, database design, develop ways and means of analysis, based on the actual conditions of choice C3D D geographic information system platform as the core , combined with visual programming software development tool VS2003 and three-dimensional graphics DirectX, with component development means, the secondary development of geographic information systems, forming a blow-based GIS visualization system emergency drill, basically realized process simulation exercise, a more realistic scene-rendering,andrelated information fast queries.In this paper, based on GIS technology blowout emergency drills carried out visualization systemdeveloped, in combination with virtual reality technology, and terrain data for three-dimensionalmodel of the production and optimization of the processing, the better to achieve the three-dimensional images and data combine to provide users with an intuitive visual interface to access information for the effective implementation of emergency drills and accurate decision-making provides a fast and effective information support.