• The article introduces the shortwall mining method along strike in medium-thickness seam with great dip angle, which is based on individual hydraulic prop and has brought great economic effect.

    倾角中厚煤层推行走向短壁采煤方法,使用单体液压支柱,取得较好的技术经济效果

    youdao

  • The article introduces the shortwall mining method along strike in medium-thickness seam with great dip angle, which is based on individual hydraulic prop and has brought great economic effect.

    倾角中厚煤层推行走向短壁采煤方法,使用单体液压支柱,取得较好的技术经济效果

    youdao

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