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June 4, 2026Canadian Geotechnical Journal

Analytical model for tunnel face stability considering zonal weakening effect of rock mass parameters

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Authors

JMJianhong ManLWL.Q. WangLALu An

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Overview

Randomized trial analyzes tunnel face stability influenced by rock parameters and blast effects, suggesting improved assessment methods.

Key Points

  • This research aims to develop a model for assessing tunnel face stability by factoring in the degradation of rock strength caused by blasting.
  • Developed a model integrating a weakening factor with the Hoek-Brown criterion for rock stability.
  • Utilized a three-dimensional spatial discretization technique and limit analysis for stability analysis.
  • Analyzed continuous blasting effects during multiple excavation steps, incorporating various factors affecting stability.
  • A new stability analysis model visually presents collapse areas under varying rock degradation.
  • Identified that rock mass quality and disturbance degree significantly affect tunnel face collapse risks.
  • Provided reliable data supporting rock tunnel face stability assessments.

Cite This Study

Man et al. (2026) studied this question.

synapsesocial.com/papers/6a2117dfd499ed480b170b02https://doi.org/10.1139/cgj-2026-0323
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Also Consider

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

  1. 1Vertical Discretization Analysis of Tunnel Face Stability in Deep Tunnels2026 · 1 citations
  2. 2An Improved Failure Model Considering the Arching Effect for Tunnel Face Stability in a Weak and Fractured Rock Mass2024 · 7 citations
  3. 3Dynamic Behavior and Computational Investigation of Tunnel Blasting Subjected to Varying Geostresses2026
  4. 4Safety assessment of tunnel infrastructure under upgrades of ventilation systems through side rock blasting2026
  5. 5Study on Stability of Excavation Face and Parametric Analysis of Bolt Reinforcement of Deep-Buried Tunnel2026