论文部分内容阅读
克里沃罗格矿区是苏联黑色冶金的主要原料基地。这里有5个世界上规模最大的采选公司,开采和加工约5亿吨矿石。但由于开采深度加大,各采选公司的技术经济指标都有下降,这可能会导致将来生产规模显著缩小,基本投资不断增长和采矿用地增多。在露天开采中运输问题具有特殊意义,如果说在地下开采中,运输和放矿的劳动和材料费用占15～18%,那么,在露天开采中达到一定深度时这项费用要占总费用的60%
The Krivoy Rug mine is the main raw material base for the Soviet Union’s black metallurgy. There are five of the world’s largest mining companies, mining and processing about 500 million tons of ore. However, due to the deepening of mining, the technical and economic indicators of all mining companies have declined, which may lead to a significant reduction in the scale of production in the future, the basic investment is growing and mining land increased. The problem of transport in open pit mining is of special significance. If the costs of labor and materials for transportation and ore extraction are 15-18% for underground mining, then the total cost 60%