| 摘要 |
The invention relates to mining, in particular to methods for blasting of fractured and stratified-fractured rocks, for instance granites, limestone, ferruginous quartzite and sandstones. A method for arrangement of torpedo at breaking fractured ground includes separation of system of cracks and determination of directing spurs of those on drilling area, determination of direction of placement of main and additional rows of blasthole charges and positions of charges in those one highlights the main and additional systems of cracks and rows of well charges are directed with respect to main system of cracks at angle, that satisfies conditions:,where:- angles between spurs of the main and additional systems of cracks in positive and negative reference directions, degree;- distances between spurs of cracks in main and additional crack systems, respectively, m;- distance between well charges in rows. |
