СПОСОБ ФОРМИРОВАНИЯ ЗАРЯДОВ С ВОЗДУШНЫМИ ПРОМЕЖУТКАМИ

摘要

FIELD: drilling and blasting operations, applicable in various branches using blasting operations in hard rock masses. ^ SUBSTANCE: the method consists in a preliminary arrangement of a water-proofing casing in dry borehole, forming of a non-water-proof explosive charge in it and tamping of the borehole over the water-proofing casing. Air gaps of foamed polystyrene are formed in the water-proofing casing between the parts of the dispersed explosive charge and between the upper part of the explosive charge and the stemming. ^ EFFECT: enhanced efficiency of the blast breaking of rocks. ^ 6 dwg