复杂坑道内温压炸药冲击波效应试验研究

摘要

通过在复杂坑道中进行温压炸药和TNT炸药爆炸试验，分别获得了冲击波峰值压力、冲击波冲量和热响应温度曲线。研究了温压炸药爆炸冲击波在复杂坑道环境内的传播规律，并对比分析了温压炸药和TNT炸药爆炸效应参数的特性。研究结果表明：复杂坑道冲击波超压曲线出现几个峰值，随着爆心距的增加，首峰不再是最大峰值；弯道不但能显著减小炸药爆炸冲击波峰值压力，而且还能增大冲击波冲量；温压炸药试样在坑道中的冲击波超压峰值、冲击波冲量及热响应温度普遍大于TNT炸药，并且出现了明显的二次燃烧现象。%The curves of shock wave peak overpressure, shock wave impulse and response peak temperature for thermo-baric and TNT explosives in complex tunnel were obtained by blast experiments respectively. The propagation rules of explosive shock-wave of thermo-baric explosive in complex tunnel were studied, and the characteristics of blast effect parameters for thermo-baric explosive and TNT were also compared. The results shows that there are several peak values in the curves of shock wave overpressure, but the first peak value is not the maximum one with the increase of the instance from the explosion center. The bended tunnel not only can make the shock wave peak overpressure decreased effectively, but also can make shock wave impulse increased. The shock wave peak overpressure, shock wave impulse and response peak temperature of thermo-baric explosive sample are generally larger than those of TNT, and the secondary combustion process for thermo-baric explosive occurs obviously.