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The high-stress environment encountered in deep underground engineering typically induces compressive strain localization, a specific form of strain localization. Once compressive localization initiates, the localization band progressively propagates under sustained external loading, eventually extending throughout the entire computational domain, thereby exhibiting progressive instability and failure. This process encompasses not only material softening behavior but also nonassociated flow characteristics, specifically under a cap-shaped yield surface or plastic potential. Therefore, integrating the numerical analysis method proposed in Chap. 6 with a specific sandstone constitutive model is essential for accurately capturing the progressive failure process associated with compressive localization.

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Simulation of the Progressive Failure of Deep Rock via Implicit Gradient Theory

  • 章节

  • 发表日期：

    2025年

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  • Xilin Lü,
  • Dawei Xue

摘要

The high-stress environment encountered in deep underground engineering typically induces compressive strain localization, a specific form of strain localization. Once compressive localization initiates, the localization band progressively propagates under sustained external loading, eventually extending throughout the entire computational domain, thereby exhibiting progressive instability and failure. This process encompasses not only material softening behavior but also nonassociated flow characteristics, specifically under a cap-shaped yield surface or plastic potential. Therefore, integrating the numerical analysis method proposed in Chap. 6 with a specific sandstone constitutive model is essential for accurately capturing the progressive failure process associated with compressive localization.