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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 influence of soft interlayer on the energy transfer process of explosives, ANSYS / LS-DYNA is used to simulate the propagation and attenuation of stress waves in soft intercalated layers with different thicknesses. The presence or absence of the weak interlayer and the different thickness of the interlayer on the stress wave at the determined location are analyzed. Combined with on-site analysis of the over-under-dig phenomenon during the blasting of the rock mass containing the weakly intercalated layers, it is pointed out that the arrangement of the shot holes around the tunnel must be The full consideration of the influence of weak interlayer provides a theoretical basis for the selection of blasting parameters.