SELECTIVE EXTRACTION METHOD OF COAL BED, AND COMBINE FOR ITS IMPLEMENTATION Russian patent published in 2011 - IPC E21C41/18 E21C27/22 

FIELD: mining.

SUBSTANCE: method involves separate extraction of coal and rocks of interlayer with combined cutter-loader with cutting actuating element of selective action. Extraction of coal benches and rock interlayers is performed in the extracted strip per one pass of cutter-loader in ascending order - from soil to roof. Width of the extracted strip is accepted equal to length of two-sided loading element of cutter-loader. Separation of flows of broken coal and rocks of interlayer is performed in the mining face by means of two-sided loading element with shovelling blades and belt reloader equipped with diagonal plough. Separate transportation of broken coal and rocks of interlayer in mining face is performed with cantilever drag conveyor. Combined cutter-loader includes the housing installed on frame with blades; two cutting actuating elements of selective action; two-sided loading element made in the form of chute with shoveling blades installed symmetrically on both sides from longitudinal axis of chute, and belt reloader equipped with diagonal plough.

EFFECT: increasing efficiency of underground development of coal beds owing to selective extraction of coal and interlayers of more precious mineral resources and their separate transportation to the surface via transport chains of the mine.

2 cl, 3 dwg