煤与瓦斯突出冲击波的形成与传播规律研究

Formation and Propagation of Shock Waves During Coal and Gas Outbursts

本文首先对煤与瓦斯突出冲击波的形成过程进行了分析,然后研究了突出冲击波的初始能量.根据冲击波理论与相关资料分析得出突出冲击波属于弱冲击波,并给出了一组计算冲击波参数的常用关系式.突出冲击波传播衰减与冲击波的初始能量、传播距离、巷道摩擦阻力特性等因素有关,最后给出了突出冲击波传播规律的数学关系式.研究结果有助于了解突出后的气流动力演化规律,以及确定突出影响的范围,从而采取有效的措施进行预防控制.

Firstly,the process of shock-wave formation during coal and gas outburst is analyzed and the initial energy of shock wave during the outburst is studied.the result shows that shock waves during outburst are weak according to shock-wave theory and related mine-site investigations.A group of common mathematical expressions for calculations of shock-wave front after an instantaneous outburst are presented.A lot of factors such as initial energy of shock waves,distance,and frictional resistance of roadway etc a...