METHOD FOR DEVELOPING THIN AND LOW-POWERED STEEL-FALLING ORE BODIES Russian patent published in 2021 - IPC E21C41/22 

FIELD: mining industry.

SUBSTANCE: invention relates to the mining industry and can be used in the extraction of reserves of thin and thin steeply dipping ore bodies with variable occurrence elements, as well as with unstable and medium stability of ores and host rocks. The method consists in working out the layered entry and the underlying layer along the ore body. First, the ore is excavated in a layered entry. Then, blasting of descending parallel contiguous boreholes or small-diameter boreholes beat off the ore body. The chipped ore is removed from the underlying layer with a small-sized scraper unit. The generated space is filled with a hardening backfill. After a set of standard strength is set, the underlying reserves are worked out according to the technology in the sequence indicated above.

EFFECT: increasing efficiency of the development of thin and low-power steeply dipping ore bodies by improving quality of the chipped ore, reducing the cost of breaking and repaying the worked-out space.

1 cl, 1 dwg