不同方式地下爆炸地震耦合效应的数值模拟  

Numerical Simulation of Seismic Coupling Effects in Underground Explosion with Different Explosion Modes

作　　者：肖卫国[1,2] 王肖钧[1] 劳俊[1] 朱号锋[2] 

机构地区：[1]中国科学技术大学近代力学系,安徽合肥230027 [2]西北核技术研究所,陕西西安710024

出　　处：《计算物理》2011年第6期797-802,共6页Chinese Journal of Computational Physics

摘　　要：通过一种Euler与Lagrange相结合的有限差分法,开展地下爆炸地震耦合效应的数值模拟.比较花岗岩介质中填实和空腔两种爆炸方式在地震耦合效应方面的差异,进一步分析初始空腔大小在填实以及空腔爆炸地震效应中的作用以及空腔爆炸解耦因子随频率的变化特性.计算结果表明,花岗岩介质中完全空腔解耦因子能达到50～60倍.By using a numerical method developed in this paper,namely coupled Euler/Lagrange method,numerical simulations on seismic coupling effects induced by underground explosion with different explosion modes are carried out.Seismic coupling effects in tamped and cavity explosions in granite were studied.Dependence of decoupling factor on the initial cavity volume and the frequency were examined.It shows that the decoupling factor could reach 50 to 60 for completed cavity decoupling explosions in granite.

关 键 词：地下爆炸 折合位移势 解耦因子 

分 类 号：O382[理学—流体力学]