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。
Bench height increasing is beneficial to reducing mining cost.
增加台阶高度对于降低采矿成本是有益的。
It expounds various mining methods and steps, including the bench demarcated, plan mining bench top and bottom floor, the coal and overburden amount of plan mining, and coal quality indicators.
阐述编制露天矿的各种开采计划的方法和步骤，以及其台阶划分、计划台阶顶底板的控制、编制剥离量和采矿量及其煤质指标等；
Based on geological model of deposits and by means of CAD method, the authors put forward the building method of layered opencast mining geological model, whose layers are composed of bench.
本文提出了在矿床地质模型的基础上，应用CAD技术。建立以台阶为单元的分层式矿床开采地质模型的方法。
Based on geological model of deposits and by means of CAD method, the authors put forward the building method of layered opencast mining geological model, whose layers are composed of bench.
本文提出了在矿床地质模型的基础上，应用CAD技术。建立以台阶为单元的分层式矿床开采地质模型的方法。
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