炸药爆炸起爆点数目对垂直炮孔爆破影响的有限元分析

Finite Element Analysis of Initiation Points Number Effect on Vertical Holes Blasting

为研究炸药爆炸起爆点数目对岩石爆破的影响,借助大型动力有限元程序ANSYS/LS-DYNA,以岩石深孔台阶齐发爆破为例,建立了适当的数值模拟模型,采用有限元算法中的ALE算法,对起爆点数目径向及轴向增加等情形进行了分析。结果证实,对于垂直炮孔,起爆点数目径向增加,对爆破效果没有影响,而起爆点数目轴向增加,则对爆破效果产生了不同影响。

This paper used ANSYS / LS-DYNA to analyze the effect of initiation points number on rock blasting. Numerical simulation model was set and ALE method was adopted. The results show that radial increasing of initiation points number has no effect on blasting effect while the axial increasing dose.