INCREASE OF ORE EXTRACTION AND QUALITY WHEN DEVELOPING THIN FLAT DEPOSITS

Abstract

The authors have considered an engineering solution to develop the Karnasurtsky thin flat ore bodies
located in the Lovozersky deposit by a double-cut
mining method. It has been set that the stoping excavation of balance reserves by double-cuts will
make it possible to apply rock anchor for supporting
roof’s rocks. The rock anchor application in a stoping face with a limited height instead of in-block pillars and a selective excavation technology in terms
of ore and rocks blast-separation of footwall in a
second cut reduce losses and dilution of the mined
ore by 9-11% and 22-27%, correspondinly.