drivage

The cut way and hole parameters affect the drivage efficiency and cost.

掏槽方式及布孔參數影響著掘進效率和成本.

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The sizes of section are related to the drivage costs, maintenance costs and ventilation electric costs.

井巷斷面大小直接關系到掘進費 、 維護費和通風電費.

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Mine rational drivage rate is a very important role in balancing coal cutting and driving.

合理掘進率對礦井采掘平衡具有重要的作用.

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Therefore, increasing the rock drivage speed has the most inportant meaning to accelerate the shaft building.

因此, 提高巖巷掘進速度,對加速煤礦建設有非常重要的意義.

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