METHOD OF FILLING OF ROOM WORKED-OUT SPACE IN MINERAL UNDERGROUND MINING Russian patent published in 2003 - IPC

FIELD: mining industry; applicable in underground mining of blind mineral deposits. SUBSTANCE: method includes sinking from surface to deposit of raise and passage of filling material through raise to deposit worked-out space. Fill-raise for localization of room worked-out space with safety pad formed from filling material is sunk in deposit lying side at angle of inclination to surface exceeding angle of material internal friction. Mouth of fill-raise is located beyond zone of shifting of lying side rocks, and lower part of fill- raise is sunk with branching into two-three hoses depending on deposit thickness. Inspection workings are made for monitoring the conditions of worked out space and filling material beyond zone of influence of worked-out space. Minimal required thickness of safety pad in worked-out space is determined from offered relationship. EFFECT: reduced labor input, higher safety of work. 2 dwg