• 坚硬顶板 - 引用次数：17

  This study has a successful application to working face 15102 of Qiling mine in Jincheng;and it can provide theoretical support and application guidance to control caving in hard roof under the corresponding conditions.

  研究结果在晋城七岭煤矿15102工作面成功应用,可以为相应条件下坚硬顶板控制放顶提供理论依据与应用指导。

  参考来源 - 坚硬顶板控制放顶方式及合理悬顶长度的研究
• 老顶

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