长坑道中化爆冲击波压力传播规律的数值模拟  

Simulation of the Pressure Attenuation of Chemical Shock Wave in Long Tunnels

作　　者：李秀地[1] 郑颖人[1] 李列胜[2] 郑云木[1] 

机构地区：[1]后勤工程学院军事建筑工程系,重庆400041 [2]广州军区空军后勤部机营处,广州510052

出　　处：《爆破器材》2005年第5期4-7,共4页Explosive Materials

摘　　要：为了对坑道中的防护门抗化爆冲击波效果进行有效的设计,首先需要确切知道通道中自由场压力的传播规律。基于Hopk inson比例定律,用LS-D yna动力有限元软件模拟了常规炸药在坑道入口外爆炸情况下,长坑道中冲击波峰值压力的衰减规律。模拟结果与其它经验方法的预测结果进行了比较,可为进一步研究确定坑道中防护门上的化爆冲击波荷载及其防护技术提供依据。In order to design efficient protective doors in tunnels ,pressure histories inside the tunnel should be determined primarily. Based on Hopkinson scaling law,attenuation of shock wave peak pressure in long tunnels from conventional explosions outside the tunnel entrance is simulated with the dynamic finite element software of LS-Dyna. Simulated result is compared with other experimental results ,and can be used as the basis to determine the chemical shock loads on the protective doors and the protective methods.

关 键 词：坑道 冲击波 衰减 动力有限元 

分 类 号：O382.1[理学—流体力学]