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。
As the first successful introduction of natural caving method in domestic nonferrous metal mine, Tongkuangyu mine increases production capacity 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。
The factors which effect the production capacity of mine are summarized by system analysis methods and theories such as fuzzy, operation research and mathematics statistics.
本文运用模糊数学、运筹学原理及数理统计方法，总结了影响矿井生产能力的因素，并对矿井地质条件进行了量化描述和模糊综合评判。
In Sitai mine, the production was restricted by the washery capacity. The bar screen was reformed and gained good result.
针对四台矿选煤厂制约井下生产的问题，改造其原煤车间篦条筛，达到了理想效果。
The rational decision of mining capacity is one of the key technologies in super-huge coal mine with durative, steady and high efficiency production.
特大型矿井持续稳定高效生产的关键技术之一是其开采规模的合理确定。
The rational decision of mining capacity is one of the key technologies in super-huge coal mine with durative, steady and high efficiency production.
特大型矿井持续稳定高效生产的关键技术之一是其开采规模的合理确定。
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