矿井瓦斯煤尘爆炸传播数值模拟研究

基于连续相、燃烧、颗粒相数理方程建立瓦斯煤尘爆炸传播数理模型,并应用连续相、颗粒相计算方法,依据大型巷道瓦斯爆炸、瓦斯煤尘爆炸传播实验数据,借助普遍应用的流场模拟平台,成功开发瓦斯、煤尘爆炸数值模拟系统。该系统可有效地模拟煤矿瓦斯、煤尘的爆炸事故过程,对瓦斯爆炸的爆燃转爆轰、煤尘是否参与爆炸、爆炸冲击传播速度、衰减规律以及爆炸灾害的波及范围都能进行较准确的模拟。

Numerical Simulation of Gas and Coal Dust Explosion Propagation in Mines

The mathematical physics model of gas and coal dust explosion propagation is established by using continuous phase, combustion, particulate equations of mathematical physics. Based upon the data from mine gas drainage roadway explosion, and mine gas and coal dust propagation experimental tests, a numerical simulation system for gas and coal dust explosion is developed by using prevalent flow simulation system. This system can not only simulate the explosion accidents process effectively, but also the transition from deflagration to detonation in gas explosion, propagation velocity of explosion shock, attenuation law and affected area of explosion.