METHOD FOR UNDERGROUND DEVELOPMENT OF SLOPING AND INCLINED ORE BODIES OF LOW INTENSITY Russian patent published in 2012 - IPC E21C41/22 

FIELD: mining.

SUBSTANCE: in method realisation, block resources are developed in sections, size of each in direction of maximum variability of ore body shape is established as permanent and is determined according to process conditions. Ore and rock breaking in a breakage block is carried out by sections in two stages. At the first stage due to grinding and explosion delivery of waste rock cut according to the process conditions to the ore body at a hanging or a lying side, a rock bank is formed as adjacent to the line of the cut section face. Its compactness is ensured by serial cutting of rock layers of alternate width in the cut sections, and their width reduces in direction from the line of the cut section face to the depth of the massif. Thus formed rock bank from ground rock thrown off by explosion is left in the mined space of the breakage block. At the second stage the ore body is broken at the area of its bedding with subsequent discharge of only broken ore from the breakage block.

EFFECT: increased efficiency and safety, higher parameters of complete usage of balance stocks.

1 cl, 5 dwg