The sandwich sandstone with weak interlayer such as thin coal bed, together with bedding plane and joint crack, can form unstable blocks, which threat the engineering safety.

  • 研究部位岩体为层状砂岩,含有软弱夹层,其显著特点是该砂岩的岩组中含有薄煤层,与层理、节理裂隙等的组合易形成不稳定块体,对工程安全造成危害。

  • 互联网摘选 2025-01-20 11:53:23

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