FIELD: mining.
SUBSTANCE: inclusions may be represented by layers of hard rocks, various lenses and other inclusions, such as permafrost (eternal frost) in less hard enclosing rocks. Explosive charges in additional shortened wells are placed at the level or below the soil of hard inclusions and are exploded with moderation relative to charges in the main wells. The proposed invention makes it possible to execute efficient grinding of solid inclusions that are previously softened by explosion of charges in the main wells, due to dynamic effect of explosive gases from explosion of charges in additional wells at the lower part of inclusions.
EFFECT: higher efficiency of grinding of various solid inclusions available in the upper and middle part of the ledge and arranged in less hard enclosing rocks.
2 cl, 2 dwg
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