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现代采矿工业的一个重要特点是发展大规模露天开采。在苏联受露天开采而毁坏的土地按大数估算有100万公顷(1公顷=10000m~2)。这就给发展采矿工业生产的地区带来巨大的经济损失和严重的生态问题。露天开采再进一步发展,特别是在苏联中部和南部地区,必将使宝贵的土地继续减少。随着露天采场深度的不断增加,剥岩量也要急剧增多,采矿成本也将不断提高。减少上述不利因素、提高采掘效益开采
An important feature of the modern mining industry is the development of large-scale open pit mining. The area destroyed by open pit mining in the Soviet Union is estimated at 1 million hectares (1 hectare = 10,000 m 2). This has brought enormous economic losses and serious ecological problems to the areas where the mining industry is developing. Further development of open pit mining, especially in the central and southern parts of the Soviet Union, will surely keep precious land under continuous decline. As the depth of open stopes continues to increase, the amount of stripping rock should also increase sharply and the cost of mining will also continue to increase. Reduce the above-mentioned unfavorable factors and improve extraction efficiency mining