不同岩性条件下孔壁爆炸载荷及透射波比能量计算

The Calculation of Explosion Load and Transmission Wave Specific Energy on the Different Lithology

摘要: 为研究不同激发岩性对孔壁爆炸载荷及透射波比能量的影响，基于经典的冲击波理论，建立了岩石介质中柱状装药爆炸时孔壁的初始冲击载荷计算模型，该模型将爆轰波简化为含化学反应的强间断面，弥补了弹性波理论认为孔壁周围岩石内直接产生应力波的不足，成功解释了爆轰波参数的基本关系式；建立了不同激发岩性时柱状装药爆炸的孔壁质点速度和压力随时间变化的计算模型，编程计算得到其随时间变化的函数关系式和透射波比能量的解析解。

Abstract: To study the impact of explosion load and transmission wave specific energy under the different excitation lithology, based on the classical shock wave theory, the calculation model of initial ex-plosive loading parameters of blasting hole was established, when blasting in columnar charge. The detonation waves were simplified to discontinuous surfaces which contain chemical reactions in the calculation model. It made up the weakness of the elastic wave theory which thought stress wave was produced directly in the wall of blast hole. The basic relationship of the detonation wave parameters was explained successfully. Based on the elastic wave theory, the calculation methods of the velocity and press of blasting hole particle when columnar charge blasting was established for different excitation lithology. The functional relationships and the analytical solutions of the transmitted wave specific energy were got by program.