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针对岩石装药孔要求,利用有限元仿真软件AN-SYS/AUTODYN对锥形装药、亚半球装药和K装药3种典型装药结构对岩石的侵彻过程进行了数值仿真研究,得到如下结论:亚半球装药可以形成较大的侵彻孔径,但需要增加侵深,较适用于低强度、低密度岩石;K装药可以形成较好的大深孔,但其对岩石的破坏程度较大,较适用于高强度、大密度岩石。利用实验对仿真结果进行了校核比较,结果表明仿真和实验结果符合较好,研究工作为满足岩石装药孔的装药结构设计要求提供了一条新的思路和途径。
According to the requirement of rock charge hole, the numerical simulation of the rock penetration process is carried out by using AN-SYS / AUTODYN, a finite element simulation software, and the three kinds of typical charge structures such as conical charge, sub-hemisphere charge and K charge are obtained. It is concluded that the sub-hemispherical charge can form a large penetration aperture, but need to increase the depth of invasion, more suitable for low-intensity, low-density rock; K charge can form better large deep hole, but its damage to the rock A greater degree, more suitable for high strength, high density rock. The simulation results are compared and verified by experiments. The results show that the simulation and experimental results are in good agreement. The research work provides a new way of thinking to meet the design requirements of the charge structure of rock charging holes.