瓦斯煤尘爆炸传播数值仿真系统研究

Research on Emluator System of Mine Gas and Coal Dust Explosion Propagation

以连续相、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,开发了瓦斯、煤尘爆炸数值仿真系统。该系统可以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。

The mathematical physics model of gas and coal dust explosion propagation is established in the research 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 explosion propagation experimental studies, the computing method of continuous phase and particulate phase is developed. The numerical emulator system of mine gas and coal -dust explosion, which is can be used to simulate the explosion accidents process effectively, is programmed by using prevalent flow simulation system. Importantly, the system can he used to simulate accurately the transition from deflagration to detonation in gas explosion, propagation velocity of explosion shock, attenuation law, affected area of explosion, and judge if coal dust drives the explosion or not.