我国是煤炭生产大国，但存在严重的煤矿安全生产问题(如矿井火灾、瓦斯爆炸等)，造成大量的人员伤亡和财产损失。要保证煤矿工作人员的安全，需要对他们进行安全教育、救生训练。由于煤矿中发生的一些事故，人们不可能在真实的危险环境中进行训练或验证，因而需要一个能够模拟真实环境的系统来辅助人员感受这种环境。正在发展的虚拟现实技术为从事煤矿安全工作研究的人员提供了一个很好的工具。 本文以管状空间内气体爆炸理论为基础，系统地研究了矿井巷道瓦斯爆炸的传播规律。首先分析瓦斯爆炸传播的物理机制，在此基础上，建立矿井巷道瓦斯爆炸传播的物理模型。其次，根据瓦斯爆炸传播过程的基本原理，对独头巷道中的瓦斯爆炸传播建立数学模型，利用有限差分法对建立的非线性偏微分方程进行计算机求解，从而实现对瓦斯爆炸传播过程进行数值计算。最后，本文结合对瓦斯爆炸传播的数值计算结果，运用粒子系统对瓦斯爆炸现象进行了可视化显示，并且分析了不同瓦斯浓度下爆炸火焰的传播速度、温度和爆炸冲击波压力的变化情况。 应用虚拟现实技术模拟井下场景和瓦斯爆炸过程，不仅投资少、安全可靠、可重复操作，还可以充分利用信息技术的优势对矿工、救护队安全培训提供全新的手段。这对于加强煤矿瓦斯爆炸的研究、预防瓦斯爆炸事故的发生和促进煤矿安全生产具有重要的意义。

Our country is a big producer of coals and the annual production is the first in the world. However, the secure producing situation of the coal mine is very grim (for example the fires in coal mine, gas explosion), which would result in a large quantity of casualties and property losses, and has absorbed high attention of the government. To guarantee the safety of the staff in the coal mine, it is need to instruct about mine safety and train about life-saving for them. For some accidents occurring in coal mine, it is impossible to train or verify in actual dangerous environment for people, therefore a system which can simulate real environment is needed to help people experience the environment. Developing virtual reality provides people who take on safe research with a very good tool. The thesis is on the basis of gaseous explosion theory in tubular space, analysis propagation law of gas explosion in mine roadways. Firstly, on the basis of studying physical mechanism of gas explosion in the mine, the physical model of the gas explosion propagation in the mine is built up. Secondly, the mathematical model is made by analyzing the process of gas explosion propagation in the mine roadways. Nonlinear partial differential equation established is solved by computer using the finite difference method, consequently the numerical account is built for the process of the gas explosion propagation. Finally, on the base of the result of numerical account for the process of the gas explosion propagation, the visual simulation is made for the phenomenon of the gas explosion using particle system. The gas explosion is simulated by using the particle system in the thesis, which has important meaning for in-depth research of the gas explosion in the coal mine and preventing the accident of the gas explosion taking place and furthering safe production in the coal mine.