UNDERGROUND DEVELOPMENT METHOD OF ELGINSKY COAL DEPOSIT Russian patent published in 2013 - IPC E21C41/18 

FIELD: mining.

SUBSTANCE: underground development method of the Elginsky coal deposit involves separation of the deposit into upper and lower formations, performance of paired tunnels and paired inclined working-outs, use of one branch of inclined working-outs and tunnels for coal transportation from loading points to coal-preparation plant, development of the deposit using an underground method sequentially in downstream order. Paired tunnels are performed on the lowest formation H₂ of the northern deposit part to geological breakdown; cross galleries are made after geological breakdown out of tunnels transversely to the formation spread of the south-eastern part; those formations are opened with inclined shafts and worked out with a storeyed development system with coal transportation via inclined winzes and slopes to cross galleries, and then tunnels.

EFFECT: invention allows ensuring the efficiency of development of the south-eastern part of the deposit, complete extraction of coal and possibility of applying that method at any stage of the deposit development.

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