掘进巷道瓦斯爆炸冲击波状态参数的结构分析

Structure Analysis on State Parameters on Shock Wave in Excavation Roadway during Gas Explosion

分析了掘进巷道瓦斯爆炸的基本特点,建立了掘进巷道瓦斯爆炸物理模型。利用爆炸力学、爆炸动力学和爆轰理论确定了瓦斯爆炸一维定常流动的基本关系,推导出反映气体流过间断面时质量、动量和能量守恒的雨贡纽(Hugoniot)方程式,并分析了瓦斯爆炸过程中强冲击波的极限解和弱冲击波解的意义。利用p—1/ρ曲线分析了不同曲线段、不同点所反映的瓦斯爆炸状态参数的含义。

This Paper made an analysis of the basic features of gas explosion in excavation roadway, set up the physical model of gas explosion in such roadway. The paper, by using the detonation theory, the explosion mechanics and dynamics, determined the basic relationships of one-dimensional flow of gas explosion, derived Hugoniot equation which can reflects the conservative law of mass, momentum and energy, and analyzed the sense of limit solution in strong shock wave and solution in weak shock wave. Utilizing the different parts and points in p?/p curve, the paper also analyzed the implication of state parameters in different stage and different points during gas explosion.