软弱夹层条件下隧道爆破过程数值模拟  

Numerical Simulation of the Tunnel Blasting Process in Weak Intercalated Layer

作　　者：李旺兴 梁为民[2] 张青[3] 余永强[2] 

机构地区：[1]贵州省交通监理咨询有限公司,贵州贵阳550003 [2]河南理工大学,河南焦作454000 [3]桂林理工大学,广西桂林541000

出　　处：《公路工程》2011年第5期7-10,共4页Highway Engineering

基　　金：国家自然科学基金(50874039)

摘　　要：为研究岩体中软弱夹层对炸药爆炸能量传递过程的影响,运用ANSYS/LS-DYNA对含有不同厚度的软弱夹层岩体在爆破过程中应力波的传播及衰减规律进行数值模拟研究,分析比较了软弱夹层的存在与否以及夹层的不同厚度对确定位置的应力波的影响;并结合现场对含有软弱夹层岩体在爆破过程中出现的超欠挖现象进行了分析,指出隧道周边炮孔布置必须充分考虑软弱夹层的影响,为爆破参数的选取提供了理论依据。In order to study the effect which weak the process when explosives transferring the energy, this intercalated layer produces in the rock during research uses ANSYS/LS-DYNA to explore the numerical simulation of the law which the stress wave of weak intercalated layer rock with different thick- ness propagates and decays. It also compares the effect to stress wave in certain position when the thick- ness of the intercalated layer is different or inexistent. The outbreak phenomenon of the rock with weak intercalated layer occurs in the blasting process is er should be fully considered when arranging blast theoretical basis for selecting blasting parameters. analyzed as well, so the effect of weak intercalated layhole around the tunnel. Then the research provides the

关 键 词：隧道工程 软弱夹层 数值模拟 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]