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February 11, 2026Rock Mechanics and Rock Engineering

Analysis of Deformation–Fracture Evolution and Instability Precursor Characteristics of Rock-Like Models with a Single Pre-existing Flaw

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Authors

ZWZhiwen WangSZSU ZhandongYNYao Niu

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Overview

Experimental assessment reveals fracture evolution and instability characteristics in flawed rock-like models, indicating critical parameters for stability evaluation.

Key Points

  • This research aims to characterize the deformation-fracture mechanisms and precursor characteristics in flawed rock-like models.
  • Flawed rock-like models were created using gypsum, quartz sand, and barite powder.
  • Digital image correlation (DIC) and acoustic emission (AE) were utilized to monitor deformation and fracture.
  • The deformation process was categorized into stages: initial compaction, steady-state deformation, crack propagation, and failure.
  • Elastic modulus and uniaxial compressive strength decreased with longer flaw lengths.
  • Cumulative Benioff strain showed accelerated pre-instability in small-flaw models, while larger flaws generated more shear-type fractures.
  • Pre-failure response plateau in CBS and local strain variation indicated potential instability hazards.

Cite This Study

Wang et al. (2026) studied this question.

synapsesocial.com/papers/698be001058ab1890a13bb68https://doi.org/10.1007/s00603-026-05343-z
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Local strain field deflection around fracture as a precursor to rock-like model instability: The modulating effect of compressive strength2026
  2. 2Experimental and DEM-based investigation of crack growth in rocks with pre-existing flaws2026
  3. 3Micro‐Macro Fracture Mechanism, Energy Evolution and Damage Constitutive Model of Rock‐Like Materials With Heterogeneous Parallel Double Flaws Under Triaxial Compression2026
  4. 4The influence of stress path and flaw morphology on the failure mechanism and mechanical properties of rock masses2026
  5. 5Investigation of the mechanical behavior of rock-like material with two flaws subjected to biaxial compression2024 · 53 citations