METHOD FOR INTENSIVE NON-PILLAR MINING OF MINERAL DEPOSITS AT GREAT DEPTHS Russian patent published in 2020 - IPC E21C41/16 E21F1/00 

FIELD: mining.

SUBSTANCE: invention relates to mining industry. It includes separation of stratum into pillars by driving of gangways with leaving of pillars between them, faults between drifts, ventilation gangways, auxiliary ventilation openings. Lava power train is arranged in conveyor track. A rock strip is erected behind the lava, the height of which is assumed equal to thickness of the stratum, and its width is accepted as exceeding the maximum width, at which excess stability of the conveyor drift is provided in the section located in the worked-out space between the lava and the nearest to the lava break-up, as well as air leaks are excluded. Fresh jet of air for ventilation of the lava and power train is supplied by the breakdown closest to the lava, the exhausted jet of air from the power train is taken to the ventilation drift along the section of the conveyor gangway located ahead of the lava and to the auxiliary ventilation opening.

EFFECT: invention can be used at potassium and coal mines to increase efficiency of underground development of mineral deposits at great depths.

1 cl, 1 dwg