国外有色金属矿开采的特点是:加深现有露天矿的开采极限深度和开采过去一直认为经济上不合理的深矿床。许多原有的露天矿,如宾厄姆、奇诸、莫伦西(美国)、丘基卡马塔(智利)等矿,已经过了3～4期的改建。在改建过程中,根据修改的矿石中有色金属的最低工业品位,不仅扩大了露天矿的地表境界和增加了产量,而且也加深了开采极限深度。最后一期改建,使宾厄姆露天矿深度达到800米, The characteristics of foreign non-ferrous metal mining are: to deepen the exploitation limit depth of the existing open-pit mines and to exploit the deep deposits previously thought to be economically unreasonable. Many of the original open-pit mines, such as Bingham, Qizhu, Molensi (USA), Chuquicamata (Chile) and other mines, have undergone 3-4 alterations. In the rebuilding process, according to the revised minimum industrial grade of non-ferrous metals in the ore, not only the surface state of the open pit mine is increased and the output is increased, but also the deepening of the mining limit is deepened. The last phase of reconstruction, Bingham open-pit mine depth of 800 meters,