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基于ANSYS/LS-DYNA显式动力学有限元软件,对岩体在双孔爆破荷载作用下的动力响应机理及裂隙发育规律做了较系统深入的分析。研究结果表明:爆破孔中间区域出现沿爆破孔连线中垂线方向发育的贯通裂隙,岩体有效应力迅速增大,爆破孔间岩体一定区域内裂隙二次发育,岩体的损伤破碎程度增加。
Based on the ANSYS / LS-DYNA explicit dynamics finite element software, the dynamic response mechanism of rock mass under double hole blasting load and the rule of fracture development are systematically and deeply analyzed. The results show that there is a through-crack in the middle of the blasting hole along the perpendicular line along the line of blasting holes, the effective stress of the rock mass increases rapidly, and the cracks in the rock mass within the blasting hole develop for a second time, and the damage and crushing degree of the rock mass increase.