结合平煤股份四矿硬岩巷道地质条件,采用理论分析和LS-DYNA数值模拟软件,分析了聚能装置锥角对聚能射流效果的影响,并对聚能爆破的破岩效果进行了模拟分析。分析结果表明,锥角为50°的聚能罩形成的射流稳定,聚能效果好,比常规爆破破岩能力可提高50%以上,同时抑制了非聚能方向裂纹的扩展,破碎圈范围减小30%以上。 Combining with the geological conditions of hard rock roadway in the fourth coal mine of Pingdingshan Coal Mining Company, theoretical analysis and LS-DYNA numerical simulation software were used to analyze the effect of the taper angle of the concentrating device on the condensing jet effect. analysis. The analysis results show that the jets formed by the cone with a cone angle of 50 ° are stable and have a good energy gathering effect, which can increase the rock breaking capacity by more than 50% compared with conventional blasting, and suppress the propagation of cracks in non-converging direction. Small 30% or more.