瓦斯爆炸冲击波超压的衰减规律

运用质量守恒、动量守恒和能量守恒定律及爆炸气体动力学理论等，对掘进巷道瓦斯爆炸冲击波的衰减规律进行研究.通过对瓦斯爆炸冲击波衰减规律分析表明:爆炸冲击波波阵面上的最大超压与传播距离和巷道断面积的平方根成反比，与瓦斯的初始爆炸能量的平方根成正比.实验与理论计算的对比结果表明:理论计算的数据与实验获得的数据比较接近，证明了冲击波超压随距离衰减公式的合理性.

Overpressure attenuation of shock wave during gas explosion

Combining with the theory of the conservation law of mass,momentum,energy and gas explosion dynamics,the attenuation law of shock wave in excavation roadway was deduced during gas explosion.The deduction shows that the maximum overpressure on the shock wave front is inversely proportional to the square root of the propagation distance and the roadway section,and in direct proportion to the square root of the accumulated volume of gas.Comparing the analysis between experiment and deduction,it is concluded that the theoretical data is fairly close to that of the experiment,which proves that the deduction of the overpressure on the shock wave front attenuating with the propagation distance is reasonable.