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一、概况矿用自卸汽车的发展是与露天采矿技术和生产规模的不断发展和扩大分不开的。据统计,1970年美国金属矿山有84%用露天开采(铜矿露天开采的占88%,铁矿露天开采的占94%),加拿大96%的铁矿用露天开采;1972年苏联矿石总产量的70%是露天开采的,到八十年代将发展到75～80%,铁矿石将为83%,有色金属矿石将为75～80%。
I. Overview The development of mining dump trucks is inseparable from the continuous development and expansion of open-pit mining technology and production scale. According to statistics, 84% of the metal mines in the United States used open-pit mining in 1970 (88% of open-pit copper mining and 94% of open-pit iron mining) and 96% of Canada’s open-pit mined iron ore. In 1972, the Soviet Union’s total ore output 70% is open-pit mining. By the 1980s, it will reach 75-80%, iron ore will be 83% and non-ferrous ore will be 75-80%.