Stability Evaluation of Rock Pillar Between Twin Tunnels Using Numerical Modelling

Authors

  • Suresh Raj Kalouni Rock and Tunnel Engineer, PhD Scholar in Rock Engineering from IIT, Delhi, India
  • Harendra Raj Kalouni Assistant Professor, Department of Civil Engineering, Far Western University, Mahendranagar, Nepal

DOI:

https://doi.org/10.3126/ktftj.v4i1.70443

Keywords:

numerical modeling, rock pillars, twin tunnels, stability evaluation, joints and fractures, rock mass quality

Abstract

The stability of rock pillars between twin tunnels is a critical aspect of tunnel design and construction. To ensure the stability of rock pillars between twin tunnels, this study employ numerical modeling to assess pillar stability based on excavation method, tunnel geometry, determine pillar length based on rock mass quality, and quantify deformation, stress, and zone of influence of twin tunnels. To explore the role of rock mass quality in influencing pillar stability, the study considers factors such as rock strength, intactness, and discontinuity characteristics.

Numerical modeling simulates the excavation process, considering the effects of rock mass properties, in situ stress conditions, and excavation methods. The results of the numerical simulations provide valuable insights for optimizing rock pillar design and construction practices for twin tunnels.

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Published

2024-10-04

How to Cite

Kalouni, S. R., & Kalouni, H. R. (2024). Stability Evaluation of Rock Pillar Between Twin Tunnels Using Numerical Modelling. KTFT Journal, 4(1), 166–171. https://doi.org/10.3126/ktftj.v4i1.70443

Issue

Section

Research Articles