受地应力影响岩石炮孔松动爆破应力场数值模拟研究

摘要

Choosing appropriate parameters and model, the simulation study in loose blasting stress field of the rock blast hole affected by in-situ stress was made using ANSYS/LS-DYNA numerical analysis software. The results show that the explosion distribution around the hole, rock displacement and the bursting of the particle rock will be changed by the influence of in-situ stress, the strength of the stress field is restricted, the movement speed of the particle decays faster, and the development length of crack decreases.%选用合适的参数和模型,利用ANSYS/LS-DYNA数值分析软件对受地应力影响岩石炮孔松动爆破应力场进行模拟研究,结果表明：受地应力的影响,炮孔周围岩石中的爆炸分布、岩石质点位移、岩石的破裂等都将发生变化,应力场强度受到了一定的制约,质点运动速度衰减得更快,爆破裂缝的发展长度减小。