Enhanced efficiency of blasting by new methods of borehole charge initiation in open-pit mines
Resources-saving methods of bench breaking have been developed based on integrated utilization of detonation of borehole charges and formulation of explosives with conversion additives; besides, a multi-purpose channel booster, a feature of which is combination of a priming charge and a hollow space, and charges with axial pockets have been designed. The article describes the structure of the performed research and offers the most efficient blast patterns. The standard design of the borehole charge with the multipurpose channel booster is presented. The new design feature of the charges is various-purpose stable pockets and strings of hollow chambers to form charges with the multi-purpose channel booster.