根据矿区具备多处位置、水平不同的生产坑道和含水层富水性弱等实际情况。
The productive galleries at various positions and levels in Zhuanmiao mining district are characteristic of having aquifers of low water-richness.
提高全液压坑道钻机液压系统的技术水平，对于改善钻机整机性能及提高瓦斯抽采孔的成孔率具有重要意义。
It is significant to improve the hydraulic system for better performance of drilling rig and the higher ratio of finishing gas hole.
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