巷道内瓦斯爆炸传播规律的数值模拟研究

Numerical simulation research on gas explosion propagation law in roadway

基于燃烧理论、爆炸理论及遵守的守恒定律,建立了巷道内瓦斯爆炸的数学物理模型.利用Fluent软件对煤矿巷道内预混瓦斯气体的燃烧爆炸进行了分析和模拟研究,得到了巷道内瓦斯爆炸过程中超压变化规律.展现了爆炸冲击波在巷道内的衰减过程.将数值模拟结果与实验结果进行对比分析,数据高度吻合,证明了数值模拟的合理性,进而为煤矿瓦斯爆炸传播过程的分析研究及瓦斯爆炸事故的防范提供了一定的参考,也为优化矿用救生舱、避难硐室的设计参数提供了理论依据.

On the basis of detonation theory, the conservational law of mass, momentum and energy, this paper builds the mathematical physics model of roadway after gas explosion. After simulating the explosion of the gaseous mixture of the methane and air with the help of Fluent software, it obtains the changing law of the overpressure. In comparison of the numerical simulation value and experimental value, the highly consistent data proves the rationality of numerical simulation. It offers significant reference for analyzing the gas explosion propagation procedure, preventing the explosion accident. In the meantlme, it can also offer reference for optimizing the chamber and rescue capsule, and gives held to the related orevention work. designing parameters of mine refuge