Yongsheng Jia

Jul 9, 2024 | mdpi.com | Xiaojun Zhang |Maolin He |Zhuo Li |Yongsheng Jia

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Apr 10, 2024 | mdpi.com | Hao Wu |Yongsheng Jia

1. IntroductionCrack and hole are two common kinds of defects existing in natural rock mass. At present, it is generally known that the occurrence of the defects worsens the internal structure of rock mass, and the concentrated stress that distributes at the periphery of the defects makes crack initiation tend to emerge at their tips or corners, resulting in a significant weakening of the mechanical performance and complex deformation and instability behaviors of rock mass.