• Most rock roof of roadway is sediment rock, so its intensity is low, the stratification is a common rock mass structure in coal mines.

    巷顶板多数岩体强度沉积岩,层状岩体结构是沉积岩的主要特征之一。

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  • Based on theory of composite rock beam, a function and a formula for stratification plane gliding was deducted.

    根据复合岩梁理论,推出了开采沉陷中层面滑移函数层面滑移判断

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  • According to the problems above, the waste rock fill mining method with the upward slitting stratification is put forward.

    针对上述主要问题提出采用上向分分层充填采矿

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  • According to the problems above, the waste rock fill mining method with the upward slitting stratification is put forward.

    针对上述主要问题提出采用上向分分层充填采矿

    youdao

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