FIELD: mining industry. SUBSTANCE: this relates to underground mining of coal and environment control. According to method, drilled from development openings into overlying rock over entire length of mining field are bore-holes with hardening solution at distance from each other equal to half pitch of caving or lowering of main roof rock. Length is equal to thickness of rock of immediate and main roof. Bore-holes are inclined towards mining field at angle equal to angle of caving base incline or lowering of rock. These bore-holes are alternated with bore-holes arranged in the form of fan, that is 3-4 bore-holes in one fan drilled between caving domes. Bore-holes and fans are located perpendicular to underground working. EFFECT: high efficiency. 3 dwg
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