FIELD: mining.
SUBSTANCE: method of mine insulation involves preliminary determination of rock deformation depth around the mine to be insulated. Further, a system of blast holes not deeper than rock deformation zone is created in insulation area before bridge erection. Blast holes are positioned in fan pattern, with at least three rings formed across the mine to be insulated. Work agent is loaded to blast holes till intake is exhausted. Then, airtight bridges are installed in blast hole intervals between outermost rings, and gas medium is pumped to space between bridges to maintain gas pressure in space between bridges not lower than pressure in the insulated mine during the whole mine insulation period.
EFFECT: enhanced reliability of mine insulation by sealing surrounding rock fractures regardless of fracture position and formation time.
3 cl, 1 ex, 4 dwg
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