• Accordingly, the distribution of abutment pressure on the block coal pillar is measured at working face with a steeply inclined seam of the12010 face, NO.

    据此原理,实测得到平煤集团十三矿12010大倾角综放开采工作面走向支承压力区段煤柱侧向支承压力分布

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

    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

    youdao

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

    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

    youdao

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