METHOD FOR OPEN-UNDERGROUND MINING OF FLAT COAL SEAM Russian patent published in 2023 - IPC E21C41/00 E21D11/00 E21D23/00 

FIELD: mining.

SUBSTANCE: further development of marginal reserves of a coal mine by a highwall mining system (HWMS) used for the mechanization of work performed during the extraction of HWMS equipment after an accident caused by the collapse of roof rocks into the mine working. The method of open-underground mining of a flat coal seam includes installation of a complex for deep seam mining on the working platform of a ledge of the cut side. Coal recovery by the specified complex for carrying out the development of a rectangular section. The loose coal drawing from the mining by a screw conveyor and the subsequent extraction of the equipment of the complex from the implemented mining. In the event of the roof rock fall, which prevents the extraction of the equipment of the complex, a walking support equipped with brackets with rolls of a polymer mesh is mounted on the working site in front of the mine mouth. Immediately after it, there is a walking support equipped with a manipulator. The erection of a permanent support of a mine working begins with unwinding a part of a polymer mesh roll and pressing it against the roof of the mine by lifting the top of the permanent support to the roof of the mine in the space between the walking supports immediately after entering the mine of the walking support equipped with brackets with polymer mesh rolls. The top of the permanent support is picked up and held in this position by a walking support equipped with a manipulator, all the time during which oblique niches are being built in alignment with the top of the permanent support in the sides of the mine. Further, the walking support, equipped with a manipulator, is unlocked between the mining soil and the tops of the permanent support, and the permanent support stands are installed in the corresponding oblique niches before the passage of the walking support, equipped with a manipulator. After removing the equipment of the complex, the walking support equipped with brackets is first removed from the mine, then the walking support equipped with a manipulator, and at the same time, the elements of the permanent support of the mine are dismantled.

EFFECT: increasing the efficiency and safety of mining operations.

1 cl, 6 dwg