不同装药坑道内爆炸冲击波传播规律的试验研究

Test Study on Explosion Shock Wave Propagation of Different Explosives inside Tunnels

为了评估装药爆炸毁伤威力,研究了不同装药坑道内爆炸冲击波的传播规律,进行了坑道内的爆炸试验,并分析试验数据。结果表明:爆炸初始冲击波在坑道内传播到一定远的距离处,逐渐形成稳定的平面波,并且在一定距离内其比冲量越来越大;坑道中装药种类对近场爆炸冲击波峰值超压影响较大,对足够远处影响较小;温压炸药的特性决定了它在不同测点的冲击波正压持续时间都比TNT长。

For estimating the explosion injury power of explosives, the explosion shock wave propagation of different explosives inside ttmnels was studied, and the tests of explosion in tunnel were carried out. The test results were analyzed, and the conclusion is that when the initial blast in tunnel is propagating to somewhere far, the steady plane wave is formed, and the impulse is getting higher in some distance. The kind of explosives has obvious influence on explosion blast peak pressure in close field, while little in enough far fields. The character ofthermal-baric determines that the lasting time of shock positive pressure in different test point is longer than that of TNT.