UNDERGROUND MINING METHOD OF FLAT BEDS OF MINERAL RESOURCES Russian patent published in 2009 - IPC E21C41/16 

FIELD: mining.

SUBSTANCE: invention refers to mining industry, and can be used during underground mining of flat beds of coal, salt, and shale with selective mining of mineral resource. Underground mining method of flat beds of mineral resources includes development of a mineral resource bed thus erecting rock packs 4 in the working space and leaving solid blocks 3 of mineral resource in the working space. On rock packs 4 there installed are pneumocylinders 5, and compressed air is supplied to them thus blowing pneumocylinders 5 between roof and rock packs 4. On the sides of pneumocylinders 5 there laid are wooden poles 6 which are higher than pneumocylinders 5 in a folded position. After the roof comes into contact with wooden poles 6, pneumocylinders 5 are removed from rock supports. Width of solid blocks 3 of mineral resource is accepted smaller than limit width of solid blocks left in the working space, at the reduction of which solid blocks are damaged with underground pressure, and yield of rock packs 4 is accepted equal to yield of mined rock being the result of damaged solid blocks. When developing combustible shale beds with angle of dip of up to 3-5 degrees, width of solid block 3 of mineral resource left in the working space is accepted 0.9-0.8 of the limit width of solid blocks.

EFFECT: reducing losses of mineral resource in solid blocks, and improving roof control efficiency.

2 cl, 5 dwg