近年来,在采矿工业中出现了一系列消极因素,它们减缓了本部门一些企业的技术进步速度。在露天开采工作中,这些因素大部分与采场深度的增加有关,当期剥采此增大,原料的质量指标变坏,劳动的资金装备率和追加投资不断增加以维持生产。随着采深的增加,采掘工作线缩短,工作平盘宽度 In recent years, a series of negative factors have emerged in the mining industry, which have slowed the rate of technological progress in some enterprises in the sector. In the open-pit mining, most of these factors are related to the increase of stope depth. In the current period, the increase of stripping, the deterioration of the quality indicators of raw materials, and the increase of capital equipment rate and additional investment in labor to maintain production. With the increase of mining depth, the mining work line is shortened and the working flat width