FIELD: mining.
SUBSTANCE: method comprises preliminary loosening of a block of rocks and half-rocks by simultaneous massive drilling holes in it with the maximum density across the whole area of the block prepared for extraction, using a multibar drilling unit, followed by the extraction of rock by machine ways destroying the rock solid blocks between the holes.
EFFECT: complete elimination of harmful effects on the environment and the operational staff at drilling and blasting loosening rocks.
2 cl
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RU2498211C2 |
