open-pit bench 露天矿台阶
An experimental test of bench mining in the high and dangerous slope of a certain open-pit mine was made.
在某露天矿山的高危边坡上进行了台阶采矿的试验研究。
The research result showed that the average transport work content of ore and rock in open-pit decreases as bench height increasing.
研究结果表明，随着台阶高度的增加，采出矿岩平均运输功含量呈下降趋势。
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