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浅谈复合顶板巷道围岩变形机理

Shandong Coal Science and Technology(2013)

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Abstract
复合顶板是一种由多层厚度较小、层理、节理和裂隙发育、强度低的软弱煤岩层相互组合构成的较常见的岩层赋存形态。其变形破坏特征是:岩层的抗变形能力差,很容易发生大的挠曲破坏,导致岩层之间相互离层,进而导致复合顶板产生开裂、冒落等。
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