The large diameter direct drainage borehole is used to strengthening mine drainage capacity, to ensure coalmine safety production.
大孔径直排孔的作用是加强矿井排水能力,保证煤矿安全生产。
2
As the first successful introduction of natural caving method in domestic nonferrous metal mine, Tongkuangyu mine increases productioncapacity and reduces production costs.
铜矿峪矿作为国内第一个成功引进自然崩落法技术的有色金属矿山,提高了矿山生产能力,降低了生产成本。
3
The factors which effect the productioncapacity of mine are summarized by system analysis methods and theories such as fuzzy, operation research and mathematics statistics.