预估爆破岩石破碎度并对它的级配进行描述,具有重大的技术价值和经济价值,所以建立一个与实际比较吻合的破碎度模型一直是人们努力的目标。早期对破碎度的描述是采用级配曲线上的一个点,即50％或80％的物料能通过的筛孔尺寸K50或K80来进行的。但很快发现仅利用这一参数难以满足生产、科研实际的需要。于是以两参数来描述爆破岩石破碎度规律的许多模型便产生了。当前在世界爆破界公 Estimating blasting rock fragmentation and describing its gradation has great technical value and economic value. Therefore, establishing a fragmentation model that is more consistent with reality has always been the goal of people’s efforts. The earlier description of fragmentation was made using a point on the grading curve, that is, 50% or 80% of the material can pass through the mesh size K50 or K80. However, it soon became clear that using only this parameter was difficult to meet the actual needs of production and scientific research. So many models describing the law of the fragmentation of blasting rock with two parameters are produced. Currently in the world of explosives