The drilling miningmethod is a new Coal-miningmethod.
钻机采煤法是一种新型的采煤方法。
2
A coalminingmethod with a combination of a slicing and caving, a double benefit in control of water conducted crack zone development and in reduction of coal production cost can be obtained.
对厚煤层采用分层与放顶煤相结合的采煤方法,既可控制导水裂缝带的发育高度,又可降低生产成本。
3
From the theoretical and experimental study, the paper made a brief analysis of the advancing coalminingmethod affected on coal and gas outbursts.