METHOD OF MINERAL DEPOSITS MINING Russian patent published in 2002 - IPC

FIELD: mining; applicable in underground mining of mineral deposits under conditions of high rock pressure and its dynamic manifestations. SUBSTANCE: method includes driving of development and subordinate development workings, blocks drilling-off, ore breaking and drawing through draw holes. Solid works on underlying level are carried out beyond zone of support pressure with lagging behind stoping operations on overlying level, and stoping operations in next block of extracted level are carried out with lagging behind its solid and preparatory works. Solid and preparatory works on underlying level are carried out with lagging behind stoping operations on overlaying level through value determined by expression: a=H*tg α/L, where H is depth of mining, m; α is angle of ore body dipping, deg; L is distance to front of stoping operations, m. Stoping operations in next block of extracted level are carried out with lagging behind level solid and preparatory works through 3-4 blocks. EFFECT: higher safety of mining operations and mining efficiency. 2 dwg