矿山地质灾害类型与矿山规模、开采方式、矿产类型及所处地域相关等特点。
The type of mine geology hazard relate to mine scale, way of exploitation, mineral type and the area.
随着矿山规模的不断扩大和进入深部开采，矿石的原矿品位和相对可磨度逐渐降低，磨矿成本随之升高。
With mining capacity continuous increase and with mine entering into deep mining stage, the grade of crude ore and the grindability of ore decrease that raise the cost of grinding.
金属矿山地下开采扩建合理生产规模的确定，是矿区开发过程中的一个重要决策因素。
The production scale of the underground metal mine is one of the decisive factors to be considered when the mine is enlarged.
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