METHOD FOR MINING OF THIN GENTLY DIPPING ORE BODIES

摘要

FIELD: mining industry. SUBSTANCE: method for mining of thin gently dipping ore bodies includes preparation of panels by panel drifts and raises; separation of panels into upper and lower half-panels; mining of ore body to the dip; combined breaking of ore with partial cutting of rock in face; selection of parameters of blasting operations to produce fine fraction of ore and coarse fraction of rocks and blasthole depth depending on thickness, shape and dip and strike of ore body; erection of support of auxiliary haulageway in stope along the strike of ore body on the boundary between upper and lower half-panels; transfer of mined bulk to the rise of ore body from upper half- panel to mobile sorting device in panel shift, and from lower half-panel, to sorting device in auxiliary haulageway; establishment of limiting size of ore and rock separation according to preset losses and impoverishment; size separation of mined bulk; output of undersize ore with rock of fine fraction from upper half-panel along panel drift; and from lower half-panel; along the auxiliary haulageway; delivery of undersize - coarse lump rock to worked out space of overlying half-panel for its filling. EFFECT: higher efficiency. 3 cl, 4 dwg