FIELD: mining.
SUBSTANCE: invention relates to mining, particularly, to ore breaking. Proposed method comprises drilling the wells, defining the location for live primer for charge direct and inverse initiation by calculations, formatting of elongated explosive charge, fitting the live primer in explosive charge to divide it into two parts, filling the well top with explosive and stemming material and blasting of the well. Explosive charge length is measured and live primer location in charge is defined from the well bottom with due allowance for preset live primer length and volume of explosive in 1 metre of the well by claimed formulae.
EFFECT: higher blast power and efficiency, decreased volume of drill works and specific consumption of explosives.
2 cl, 2 dwg
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