DETERMINATION OF RATIONAL PARAMETERS OF BLAST WELLS DURING PRELIMINARY CREVICE FORMATION IN CAREERS

Abstract

Recommended solutions to reduce the width of the zone of residual deformation, set the parameters and delineation of charges for shielding the slit with enhanced protective capacity and selected parameters of blasting in the marginal zone, ensuring the creation of the shielding slit with high protective ability. The dependence of changes in the diameter of a contour well, the linear mass of the contour charge and the distance between contour wells on the physical and mechanical properties of rocks and energy indicators of industrial explosives is established.