• A coal mining method 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.

    对厚煤层采用分层顶煤相结合采煤方法,既可控制导裂缝发育高度,可降低生产成本

    dict.cnki.net

  • A coal mining method 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.

    对厚煤层采用分层顶煤相结合采煤方法,既可控制导裂缝发育高度,可降低生产成本

    dict.cnki.net

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