通过有限元分析软件ANSYS数值模拟手段,计算了炮孔底部空气间隔装药保护层开挖的情况。对比发现正向起爆对孔底岩石的破坏深度要大一些,计算结果与实测值相近。结果表明,基于工程实践的数值模拟能客观地再现实际岩石破坏过程及其破坏范围,有助于为爆破设计提供参考。 The finite element analysis software ANSYS numerical simulation method was used to calculate the situation of the excavation of the protective coating at the bottom of the borehole. The comparison shows that the destructive depth of the rock at the bottom of the hole by the forward detonation is larger, and the calculated result is similar to the measured value. The results show that the numerical simulation based on engineering practice can objectively reproduce the actual rock failure process and its failure range, which is helpful to provide a reference for blasting design.