单排孔齐发爆破孔间应力分析  

Stress analysis of single range holes with simultaneous blasting

作　　者：王震[1,2] 段海峰[1,2] 马建兴[1,2] 

机构地区：[1]A包头钢铁学院资源工程系 [2]包头钢铁公司白云鄂博铁矿

出　　处：《包头钢铁学院学报》1999年第1期12-15,共4页Journal of Baotou University of Iron and Steel Technology

摘　　要：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。Using stress analysis theory and method, rocky crushing mechanism between two holes of single line hole simultaneity explosion is studied. Analysing the distribution of rocky tension pressure region, pressure region, pure tension surface in the range of two holes explosion and the elastic displacement region's stress, strain and movement state during explosion, it is considered that during the precrack explosion, big hole distance and other single line hole simultaneity explosion, the penetration between two holes is identical, the penetration is not accomplished only by the tension vertical to the gun port center on line, and all factors that make rock to form the deformation and displacement facing the free surface affect the penetration between two holes.

关 键 词：露天矿 齐发爆破 应力分析 单排孔 爆破 采矿 

分 类 号：TD235.11[矿业工程—矿井建设] TD854.2