surface mine 露天矿山 ; 露天矿
surface mine water 露天矿坑水
surface mine field 露天矿田
surface mine life 露天矿服务年限
surface mine survey 露天矿测量
surface mine design 露天矿设计
surface mine capacity 露天矿规模
designed surface mine capacity 露天矿设计生产能力
workable surface mine reserves 露天矿可采储量
surface mine drainage 露天矿排水
At present, the technique of coal-bed methane surface mine and gas drainage was mature, so it was feasible for coal-bed methane development and utilization in Sichuan Province.
目前国内外煤层气地面开采技术、井下瓦斯抽放技术均已成熟，四川煤层气开发利用是可行的。
To recover the remainder coal in the side slope walls of surface mine by use of underground coal winning method can increase coal recovery rate and mine economic effect.
采用地下台阶式开采法回采露天矿端帮煤可大大提高煤炭资源回收率和矿山经济效益；
Slope stability is the key factor of safety in production in surface mine.
边坡稳定性是确保露天矿安全生产的重要因素。
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