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以应力分析的理论和方法,研究了单排孔齐发爆破两孔间岩石的破碎机理.通过分析两孔爆炸范围内岩石的拉压应力区、压应力区、纯拉力面等几部分的分布区域和弹性位移区在爆炸过程中的应力、应变及运动状态,认为,在预裂爆破、大孔距及其它单排孔齐发爆破中,两孔间的贯穿机理是相同的,并不是由垂直于炮孔联心线上的拉应力单独完成的,一切影响岩石产生朝自由面方向的形变和位移的因素,均对两孔间的贯穿有影响
With the theory and method of stress analysis, the crushing mechanism of rocks between two holes by single-row hole blasting is studied. Through the analysis of the stress and strain and the movement state of the distribution area and the elastic displacement zone of rock in the area of two holes explosion in the area of tensile and compressive stress, compressive stress zone and pure tensile surface, it is considered that in the pre-cracking blasting, Large hole spacing and other single-row hole blasting, the penetration mechanism between the two holes is the same, not by the vertical stress perpendicular to the joint hole on the hole to complete, all affect the rock to produce free surface deformation and Displacement factors, both of the holes between the penetration