近地爆冲击波在洞库内的传播特性

Propagation Characteristic of Near-Earth Detonation Shock Wave in Underground Structure

研究了洞库内TNT炸药离地面较近时,产生的爆炸冲击波在一端封闭的洞库内的传播特性。由于洞库纵深短,传播特性主要为炸药近地爆条件下冲击波的早期非稳定传播。采用数值模拟方法进行了爆炸仿真试验,得到冲击波超压云图和压力时程曲线,总结出了近地爆条件下冲击波在洞库内的不规则反射、环流以及二元波次等特点。

This paper mainly studied the propagation characteristics of the TNT explosion shock waves in an only one side enclosed underground structure. Because of the short depth of the underground structure, the propagation was the early stage of the shock-wave which was non-stable under the condition of near-earth detonation. This study used numerical simulation method to conduct blast simulation test,and got the shock wave over pressure cloud and the pressure temporal curves,and summed up the characteristics of ir-regular reflection,circulation and dual wave inferior under the condition of near-earth explosion shock wave in the underground structure.