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一、概述由于建设大型矿山可以采用大型、高效而又耐用的设备,可以提高矿山生产能力、减少单位投资,可以提高劳动生产率、降低开采成本。因此,从六十年代到七十年代,国外一直以重点发展大型矿山(特别是大型露天矿)来加快其矿山工业的发展速度。预计这种势态在八十年代仍将继续。目前,国外已经投产或正在建设的年产原矿1000万吨以上(或采剥总量超过2000万吨)的大型金属露天矿约有六、七十座;其
I. Overview As the construction of large-scale mines can be large, efficient and durable equipment, can improve mine production capacity, reduce unit investment, can improve labor productivity and reduce mining costs. Therefore, from the 1960s to the 1970s, foreign countries have been focusing on the development of large-scale mines (especially large-scale surface mines) to speed up the development of their mining industry. It is expected that this trend will continue in the 1980s. At present, there are about 60 to 70 large-scale open-pit metal mines with an annual output of more than 10 million tons of ore (or more than 20 million tons of flats extracted) that have been put into operation or under construction in foreign countries.