地下爆炸地震耦合效应的静态分析

英文篇名：Static analysis on seismic coupling of underground explosions
中文刊名：地震学报
英文刊名：Acta Seismologica Sinica
作者：朱号锋 ; 靳平 ; 肖卫国
英文作者：Zhu Haofeng Jin Ping Xiao Weiguo(Northwest Institute of Nuclear Technology ; Xi'an 710024 ; China)
中文关键词：地下爆炸 ; 地震耦合效应 ; 准静态 ; 折合位移势
英文关键词：underground explosion ; seismic coupling ; quasi-static ; reduced displacement potential
出版日期：2010-03-15
机构：西北核技术研究所;
年：2010
期：02
出版单位：地震学报

摘要

首先修正了地下爆炸地震耦合效应的准静态理论,然后利用改进之后的理论对剪切模量、材料强度、围压以及孔隙率不同的介质中地下爆炸的震源强度进行了分析.分析结果表明,对于密实硬岩介质来说,在其它条件不变的情况下,介质的剪切模量越大,震源强度越低;介质的强度越大,震源强度越低;震源强度随着埋深的增加而降低.而干燥多孔介质中的干孔隙率也对震源强度有重要影响.
By introducing the effect of pore crush,the quasi-static theory on seismic coupling of underground explosions has been modified.The influence of shear modulus,material strength,overburden pressure and porosity on explosive energy coupling is studied.The results indicate that,for close-grained hard rock,the explosive energy coupling decreases with the increase of shear modulus,material strength and overburden pressure,provided other conditions remain unchanged.And for dry porous medium,the explosive energy coupling is influenced by dry porosity.

引文

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