不同方式地下爆炸地震耦合效应的数值模拟

计算物理 ›› 2011, Vol. 28 ›› Issue (6): 797-802.

不同方式地下爆炸地震耦合效应的数值模拟

肖卫国^1,2, 王肖钧¹, 劳俊¹, 朱号锋²

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

收稿日期:2011-01-12 修回日期:2011-05-26 出版日期:2011-11-25 发布日期:2011-11-25
作者简介:肖卫国(1971-),男,江西玉山,副研究员,博士,从事地下爆炸震源特性研究,西安市69信箱11分箱,陕西西安710024,E-mail:xwg@mail.uetc.edu.cn

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

XIAO Weiguo^1,2, WANG Xiaojun¹, LAO Jun¹, ZHU Haofeng²

1. Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China;
2. Northwest Institute of Nuclear Technology, Xi'an 710024, China

Received:2011-01-12 Revised:2011-05-26 Online:2011-11-25 Published:2011-11-25

摘要/Abstract

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.

关键词: 地下爆炸, 折合位移势, 解耦因子

Abstract: 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.

Key words: underground explosion, reduced displacement potential, decoupling factor

中图分类号:

O382

肖卫国, 王肖钧, 劳俊, 朱号锋. 不同方式地下爆炸地震耦合效应的数值模拟[J]. 计算物理, 2011, 28(6): 797-802.

XIAO Weiguo, WANG Xiaojun, LAO Jun, ZHU Haofeng. Numerical Simulation of Seismic Coupling Effects in Underground Explosion with Different Explosion Modes[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2011, 28(6): 797-802.

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