The Research And Simulation Of Mine Gas Explosion Based On Particles System

Mine gas explosion is one of the worst mine disaster. It has serious threat to the security of state property and people's life. Therefore, in order to provide theoretical and technical guidance and support for the prevention and control on the gas explosion, it is important to study the mechanism and characteristics of gas explosion, and to re-present the gas explosion scene using virtual reality technology.Thesis imitated the gas explosion by using particles system on the base of the physical mechanism of the gas explosion that based on Detonics and Combustion. Thesis analyzed the conditions, characteristics and parameters of the gas explosion and studied the physical model of gas explosion; on the base of actual situation of gas explosion in blind drift, studied the mathematical model of gas explosion transformation combined with the factors that affected the transformation of gas explosion; using particles system and BillBord technology to imitate the gas explosion combined with buoyancy field, gravitational field, eddy field according to the dynamic nature of particle. Thesis used the texture mapping technology and LOD technology to draw particles and establish the environment model of gas explosion. On the aspect of indentifying initial rate of particles system, the traditional particle system has randomness but the lack of specificity for the specific simulation objects. The thesis improved the method of setting the initial velocity particles combined with the characters of gas explosion,making experimental result more realistic.The thesis used the improved particles system to imitate the gas explosion based on the basic principles of gas explosion. The experimental results prove that the improved particles system can vividly represent the spherical effects of gas explosion.