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应用爆轰理论、爆炸力学和爆轰物理学等基本理论和方法,建立了掘进巷道瓦斯爆轰的物理模型和一维不定常流动的数学关系式.目的在于利用瓦斯爆轰的波强度变化方程研究掘进巷道瓦斯爆轰的衰减规律.通过推导认为平面爆轰波衰减迹线有渐近线,但却不能在有限距离内转变为C-J爆轰状态.而柱面和球面散心强爆轰波却可以在某个有限距离内衰减到C-J状态,文中推导了这个有限距离.另外,掘进巷道瓦斯爆轰波传播过程中,可以根据已知波前状态参数推导出能表征爆轰衰减规律的超压表达式,同时利用Hugoniot曲线对超压的衰减进行了描述.图2,参9.
Based on the basic theories and methods of detonation theory, explosive mechanics and detonation physics, the mathematical model of gas detonation in tunneling roadway and the mathematical relation of one-dimensional unsteady flow are established.The purpose is to make use of the gas intensity change equation of gas detonation The attenuation law of gas detonation in roadway driving is studied.Through deducing that asymptotic line of attenuation trace of plane detonation wave can not be transformed into CJ detonation state in finite distance, Can be reduced to CJ state within a finite distance, and the finite distance is deduced in this paper.In the process of gas detonation wave propagation in roadway, we can deduce the overpressure that can characterize the detonation attenuation law according to the known wavefront state parameters At the same time, the overpressure attenuation is described by Hugoniot curve.