软弱夹层条件下隧道爆破过程数值模拟  

Numerical Simulation of Tunnel Blasting Process in Weak Intercalated Layer

作　　者：梁为民[1] 李旺兴[1] 张青[2] 贺拿[1] 

机构地区：[1]河南理工大学,焦作市454000 [2]桂林理工大学,桂林市541000

出　　处：《公路》2011年第10期202-206,共5页Highway

基　　金：国家自然科学基金;项目编号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 intercalated layer produces in the rock during the process when explosives transferring the energy,ANSYS/LS-DYNA is used to explore the numerical simulation of the law which the stress wave of weak intercalated layer rock with different thickness propagates and decays.It also compares the effect to stress wave in certain position when the thickness of the intercalated layer is different or inexistent.The outbreak phenomenon of the rock with weak intercalated layer occurs in the blasting process is analyzed as well,so the effect of weak intercalated layer should be fully considered when arranging blast hole around the tunnel.Then the research provides the theoretical basis for selecting blasting parameters.

关 键 词：隧道工程 软弱夹层 数值模拟 分析 研究 

分 类 号：U455.6[建筑科学—桥梁与隧道工程]