• 叙述走向长壁后退式柔性掩护支架采煤急斜煤层中的应用效果

    The paper discusses the application and the effects of the coal mining method with retreating-longwall flexible shield support in steeply-inclined coal seam.

    youdao

  • 煤层水平分段放顶煤开采与斜煤层不同,工作面沿煤层厚度的水平线布置,长度短。

    The horizontal section top coal caving in steep seam is different from the gently inclined seam.

    youdao

  • 新型采煤实施有利于避免近距煤层开采的相互影响提高生产能力采出率形成规范通风系统

    The application of new mining method is benefic to avoiding mutual effect between steeply inclined near coal seams, improving production ability and recovery, forming canonical ventilation system.

    youdao

  • 首先利用相似模拟实验研究了急斜煤层顶煤冒落特征顶板破坏规律以及地表下沉特点

    First, based on similar material model test, top coal cave-in characters in steep and thick seam were studied as well as failure law of main roof and features of surface subsiding.

    youdao

  • 论证(厚)煤层上山保护煤柱回收可行性。

    The feasibility of the protective coal pillar mining in the artificial inclined steep drift in the thick (ultra thick) coal seam of a large slope is discussed.

    youdao

  • 论证(厚)煤层上山保护煤柱回收可行性。

    The feasibility of the protective coal pillar mining in the artificial inclined steep drift in the thick (ultra thick) coal seam of a large slope is discussed.

    youdao

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