• The South ore-bearing zone of Wushan copper mine is mined with ascending horizontal slicing hydraulic fill crosscut mining system. Roof falling and rib spalling occurred in any times.

    武山铜矿采用上向水平分层进路水砂充填法回采,采场多次发生冒顶、片帮。

    youdao

  • The rock movement between the horizontal section of the top coal caving and inclined slicing of the top coal caving was analyzed.

    运用相似材料模拟数值计算方法,水平分段和倾斜分层顶煤开采引起围岩移动特征进行了比较。

    youdao

  • The rock movement between the horizontal section of the top coal caving and inclined slicing of the top coal caving was analyzed.

    运用相似材料模拟数值计算方法,水平分段和倾斜分层顶煤开采引起围岩移动特征进行了比较。

    youdao

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