Based on the analysis of the blasting factors,this paper analyzed the effect of different hole spacing upon the hard top coal by pre-splitting blast and thus obtained reasonable blasting.

• 在探讨爆破工艺参数的基础上,利用数值模拟技术分析不同炮孔间距对该矿坚硬顶煤预裂爆破的影响并得出合理的炮孔布置间距,为顶煤预裂爆破弱化方案的设计提供了理论依据。