COAL BED SELECTIVE REMOVAL METHOD Russian patent published in 2010 - IPC E21C41/18 E21C41/00 

FIELD: mining.

SUBSTANCE: invention relates to mining, in particular - to development of coal beds with separation of the produced rock mass. The coal bed selective removal method involves division of the developed coal bed substances into the elements-admixtures groups, the groups prioritesation according to their extraction order, removal of coal and inclusions with increased content of elements-admixtures with a cutter loader in a single passage of the cutter loader within a technological cycle, loading broken coal and inclusions onto the bottom-hole conveyor and subsequent reloading onto a site transportation vehicle represented by a belt conveyor. Over the belt conveyor one installs identifier sensors set to a specified increased concentration of a specific group of elements-admixtures. The identifier sensor actuation launches the drives of the execution mechanisms of the rock mass reloading assembly on the conjugation of the site and main excavation. This enables reparation of the rock mass flow into a flow of coal and a flow of inclusions with increased concentration of a specific group of elements-admixtures.

EFFECT: invention ensures removal efficiency and performance of incidental removal of groups of elements-admixtures.

1 dwg