METHOD OF PREPARING AND WORKING OF THICK PITCHING COAL BED Russian patent published in 2015 - IPC E21C41/18 

FIELD: mining.

SUBSTANCE: method comprises preparing a panel by carrying out in-seam workings in the upper layer, followed by workings in the lower layer and joint mining layers in reverse order. To prepare the excavation site the ventilation and conveyor gates on the upper and lower layers to the border of the panel are carried out, where they are connected by mounting cameras in which the mechanized complexes are mounted. On the rear fences of hydroficated baring of the upper layer the additional fences are mounted, moving on rollers on the upper lining of the hydroficated baring of the lower layer. When leaving the pillars on the flanks of stope in the upper layer in hydroficated sections of the baring mounted on the flanks in the lower layer, the windows are equipped for release of carbon to the face conveyor. When non-pillar method of preparing on the conveyor and ventilation gates of the lower layer, travelled with coal-cutting with stone to gates of the upper layer, the face-end support is mounted, on which the sections of the hydroficated baring of the complex of the upper layer are moved.

EFFECT: invention enables to increase the safety and the concentration of mining operations, and reduce the amount of development workings on the rock.

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