Abstract: According to different ways of initiation on the blasting for sublevel stoping in the Lead-Zinc mine of Xitieshan，Geermu in Qinghai province，the numerical simulations about different ways of initiation were carried by making use of highly nonlinear explicit finite element analysis software. The stress distribution，the displacement change and the energy change were compared and analyzed when blasting by the way of orifice initiation or the way of bottom of the hole initiation. The simulated results show that the way of bottom of the hole initiation was better. When blasted by the way of orifice initiation，the high-stress state appeared earlier，the ore displacement was larger，the total energy was lower than that by that of bottom of the hole initiation. Then the way of orifice initiation was not conducive to the ore crushing. The analysis provides a theoretical basis for choosing the way of mining initiation.

Key words: Ways of initiation, Numerical simulation, Fan shaped holes blasting