论文部分内容阅读
尼科波利锰矿区随着露天开采的进展,采矿技术和矿山地质条件更加复杂。露天锰矿采用的工艺和大型矿山间断和连续运输设备已掌握得相当熟练,内部生产潜力已充分挖掘,这些露天矿的技术经济指标趋向恶化。锰矿露天开采成本增长率比地下开采快,其中90％是由于剥离费用增加引起的。
As the open pit mining progresses, mining technology and mine geological conditions are more complicated. The technology used in open-pit manganese ore and the intermittent and continuous transportation equipment for large-scale mines have been well-versed and the potential for internal production has been fully tapped. The technical and economic indicators of these open-pit mines have tended to deteriorate. Open-pit mining costs have risen at a faster rate than underground mining, of which 90% is due to an increase in striping costs.