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In the study of rock mechanics, it is generally believed that the failure of rock materials is the result of the damage process of micropores and microcracks in the rock that gradually germinate, expand, aggregate and nucleate under external loads, and finally form macroscopic fracture surfaces. The main theories used in these studies of related mechanisms are the theory of failure mechanics, that is, the theory of damage mechanics and fracture mechanics. The research of damage mechanics mainly focuses on the phenomenon that macroscopic invisible micro-defects of materials under external loads (including monotone loads, dynamic loads and cyclic loads, etc.) lead to the weakening of internal cohesion of materials and the failure of mesoscopic volume units (Chang and Lee in Int J Rock Mech Min Sci 41:1069–1086, 2004; Chen et al. in Environ Earth Sci 77(3):108, 2018; Zheng et al. in Tunn Undergr Space Technol 143:105503, 2024), and the fracture mechanics is mainly concerned with the deformation properties and crack propagation laws of objects containing macroscopic visible cracks under external loads (Aliha et al. in Rock Mech Rock Eng 46:1023–1034, 2013; Yin et al. in Eng Fract Mech 199:143–158, 2018). The failure mechanics combined with damage mechanics and fracture mechanics forms the basis for studying the failure mechanism of rocks.

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Mechanism of Damage and Failure of Rock Triggered by Cyclic Dynamic Disturbance

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  • 出版模式：

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  • 发表日期：

    2025年

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  • Xu Chen

摘要

In the study of rock mechanics, it is generally believed that the failure of rock materials is the result of the damage process of micropores and microcracks in the rock that gradually germinate, expand, aggregate and nucleate under external loads, and finally form macroscopic fracture surfaces. The main theories used in these studies of related mechanisms are the theory of failure mechanics, that is, the theory of damage mechanics and fracture mechanics. The research of damage mechanics mainly focuses on the phenomenon that macroscopic invisible micro-defects of materials under external loads (including monotone loads, dynamic loads and cyclic loads, etc.) lead to the weakening of internal cohesion of materials and the failure of mesoscopic volume units (Chang and Lee in Int J Rock Mech Min Sci 41:1069–1086, 2004; Chen et al. in Environ Earth Sci 77(3):108, 2018; Zheng et al. in Tunn Undergr Space Technol 143:105503, 2024), and the fracture mechanics is mainly concerned with the deformation properties and crack propagation laws of objects containing macroscopic visible cracks under external loads (Aliha et al. in Rock Mech Rock Eng 46:1023–1034, 2013; Yin et al. in Eng Fract Mech 199:143–158, 2018). The failure mechanics combined with damage mechanics and fracture mechanics forms the basis for studying the failure mechanism of rocks.