The cut way and hole parameters affect the drivage efficiency and cost.
掏槽方式及布孔參數(shù)影響著掘進(jìn)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(guān)系到掘進(jìn)費(fèi) 、 維護(hù)費(fèi)和通風(fēng)電費(fèi).
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Mine rational drivage rate is a very important role in balancing coal cutting and driving.
合理掘進(jìn)率對(duì)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(jìn)速度,對(duì)加速煤礦建設(shè)有非常重要的意義.
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