论文部分内容阅读
近年来在金属鑛山工业中有许多地下工作已发展到相当程度的坑内作业而转变为露天开采。南乌拉尔黄铜鑛原鑛床和镍鑛床的开采均改用露天法开采;卡查赫斯坦的大型多金属鑛山和尼科波尔锰鑛床已有部分转变为露天开采,并且还有两个有色金属鑛山也将在最近几年内局部转为露天开采。这些鑛山所以能转为露天开采,一方面是由于鑛床具有适当的鑛山地质条件;另一方面是由于苏联机器制造业发达能够供应生产能率甚高的装载机、鑽机和运输机,以使露天鑛的一切繁重吃力的作业全部机械化。因此,以比较高的剥离系数用露
In recent years, many underground work in the metal mining industry has been developed to a considerable degree of pit operation and transformed into open pit mining. Exploitation of the South Ural chalcopyrite and nickel deposits has been switched to the open pit; some of the large polymetallic mines and Nicobor manganese deposits in Kazacherstan have been converted to open-pit mining and Two non-ferrous metal mines will also be partially converted to open-pit mining in recent years. These mines can therefore be converted to open-pit mining because, on the one hand, the mine has suitable mine geological conditions; on the other hand, the Soviet machine-building industry is capable of supplying loaders, rigs and transporters of very high productivity So that all open-pit mine all the hard-working homework mechanized. Therefore, with a relatively high peel coefficient with dew