FIELD: mining industry, possible use during underground processing of mineral resource deposits with hydraulic backfilling of extracted space.
SUBSTANCE: in accordance to method, perpendicularly to longitudinal axis of mine between collapsed section of mine ceiling rock massif is conserved in form of reverse trapezium. Height of fill of large and small piece parts of cross connection exceeds height of mine. Compensation volume of small piece fill, positioned above the ceiling of mine, is made greater than volume of hollow pocket formed below lesser base of rock shelf.
EFFECT: less drilling required, 1,3-1,5 times decreased consumption of explosives.
1 dwg
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