METHOD FOR EXTRACTING MINERAL RESOURCES DEPOSITS Russian patent published in 2004 - IPC

FIELD: mining industry.

SUBSTANCE: method includes extracting a quarry down to planned depth with building of edge, use of underground mines, drilling, exploding wells and outlet of ore to concentration layer, extraction of ore is performed in horizontal layers in pit contours with construction of edge with smoothly changing slant of benches slopes and its portions in accordance to separation of wind erosion zones and technical destructions and lowering cracks density with depth of deposit until constructing vertical benches when finalizing pit, and additional extraction of ore deposits below expanded pit bottom is performed by drilling from pit bottom and from mines, forming a sublevel. At the beginning ore is extracted in bottom-adjacent and edge-adjacent blocks in sections with dense wells network, and then from block from mines with total height of one sublevel, ore outlet is performed first from side of hanging side to vehicles with gradual displacement towards lying side, and delivery of ore to surface is performed, for example, by means of slanting conveyor.

EFFECT: higher efficiency, higher mineral resources yield.

2 cl, 2 dwg, 1 ex