FIELD: blasting operations.
SUBSTANCE: explosions of reference and investigated explosives are performed in rock masses of the same type as per mining-and-geological and mine engineering parameters; after the explosion of charges of compared explosives there measured is width of explosion funnel along the mine rock break line on the level of bench bottom along its lower edge, and relative strength coefficient is calculated as per the formula considering limit radius of mine rock break along bench bottom at explosion of the charge of reference and investigated explosives, capacity of well for reference and investigated explosives, and width of explosion funnel of reference and investigated explosives along the mine rock break line on the level of bench bottom along its lower edge.
EFFECT: invention allows increasing mine rock crushing intensity and reducing lump yield and cost of blasting operations.
3 cl, 2 dwg
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