克里沃罗格矿区多用直径105毫米的扇形深孔成束状密集深孔落矿的阶段矿房法,开采f=10～20至16～18的磁铁石英岩。f=16～18时,深孔凿岩的劳动量占采矿法劳动量的40～45％。每采1000吨矿石要钻进60～120米深孔。若采用可以钻进直径250毫米、深达70米炮孔的БШ—200C型牙轮钻机钻进上向和下向深孔时,台班效率可达10～20米,每米炮孔容药量可达40～42公斤,为105毫米深孔的5倍。这种钻机在该矿区磁 Kerry Voronog mine more use of the diameter of 105 mm fan-shaped deep hole into a bunch of dense deep-hole mine stage mining method, mining f = 10-20 to 16-18 magnetite quartzite. When f = 16-18, the amount of labor for deep-hole drilling accounted for 40-45% of the total amount of mining work. Each mining 1000 tons of ore to drill 60 to 120 meters deep hole. If the use of drilling diameter of 250 mm, up to 70 meters hole blasting БШ-200C type drilling rig to drill down and down to the deep hole, the class efficiency of up to 10 to 20 meters, each meter hole medicine The amount of up to 40 to 42 kg, 5 times the 105 mm deep hole. This rig is magnetically located in the mine