METHOD FOR WELL HYDRAULIC EXTRACTION OF HARD MINERAL RESOURCE FROM SLANTED BED (VARIANTS) Russian patent published in 2004 - IPC

FIELD: mining industry.

SUBSTANCE: according to the method, extracting block is placed on quarry shelf and directed in direction of fall of bed of mineral resource. At limit of block in deep section of bed extracting well is drilled up to its exit into bed soil, after which procedure well is cased from mouth to bed ceiling. In mineral resource bed hydrowashing is performed to form receiving chamber, then well is provided with slurry-hoisting equipment. In side of quarry along mineral resource bed one or several extracting wells are drilled, up to their connection to receiving chamber of extracting well, while slanting angle of wells is equal to angle of fall of bed. Extracting wells are provided with hydromonitoring body with side nozzles. Hydro-mining of mineral resource is performed while moving hydromonitoring body in extracting well along raising of bed. Resulting slurry is self-propelled into receiving chamber of removing well, and from there by means of slurry-hoisting equipment is sent to the surface. On basis of amount and relative position of extracting wells in mineral resource bed, two variants of invention may be realized: mineral resource bed is opened by one removing and one extracting wells or one removing and several extracting wells, mouths of which are dispersed along bed length in quarry side, and faces are directed into receiving chamber of removing well.

EFFECT: lesser amounts of drilling operations and simplified control of extracting wells during process of bed extraction as well as simplified process of connecting removing and extracting wells.

3 cl, 3 dwg