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经济的露天矿和露天开采方法往往适应于低品位矿岩数量的不断增加。因此,对于现用大型矿用电铲,估定精确费用和生产能力是重要的,并且往往是关键性的。电铲的主要用途是铲掘矿岩,即用铲斗沿地平开始向工作面或台阶坡面铲入。除临
Economic open pit and open pit mining methods are often adapted to the ever-increasing number of low grade ore deposits. Therefore, for current large-scale mining shovels, it is important and often critical to estimate the exact cost and capacity. The main purpose of shovel shovel mining rock, that is, with the bucket along the ground began to shovel into the work surface or step slope. In addition to Pro