METHOD OF REMINING THICK ORE DEPOSITS Russian patent published in 2000 - IPC

FIELD: mining, particularly, underground mining of ore deposits. SUBSTANCE: method may be used in recovery of lost ore after mining by methods of level and sublevel caving. The method includes driving of dosing chamber under worked-out space filled with muck in the form of broken lost ore and caved barren rocks for dosing of drawn muck and breakage of large lumps of caved barren rocks. Driven in roof of dosing chamber are vibratory inclined haulageways in which vibrating feeders are mounted. Ends of these haulageways are connected by trenches with worked-out space and muck is drawn by doses equal to volumes of dosing chamber under every vibrating feeder, with engagement into simultaneous operation of all mounted vibrating feeders. In so doing, in drawing of next dose of muck, large lumps of self-caved barren rocks are selectively broken and standard-size pieces of these rocks are transferred by separate process line. In eliminating of sticking of large lumps in vibratory haulageways, large lumps are broken by blasting them with charges of explosives, and final drawing of muck dose is effected by individual engagement of vibrating feeders. EFFECT: higher efficiency of method of recovery of lost ore in mining of ore deposits by method of level and sublevel caving due to establishment of controlled single flow in worked-out space. 5 dwg