Stress-deformation and stability challenges in Himalayan tunnels: impact of geological discontinuities
This study investigates stress-deformation behavior in Himalayan tunnels, focusing on how geological features impact stability. The objective is to enhance the understanding of displacement phenomena, particularly in tunnels traversing jointed rocks. A modified support system, to specific rock mass classifications, is employed to address the unique challenges posed by geological discontinuities. Kinematic analysis reveals a 20% probability of wedge failure due to these discontinuities. Numerical analysis using Hoek–Brown parameters identifies significant stress concentrations at the tunnel crown, especially in jointed sections, where increased convergence and displacement (1.2 mm at the crown compared to 0.25 mm at the walls) highlight the susceptibility to deformation. The study indicates the critical need for specialized support in jointed regions to mitigate stability risks.
Authors
- Naeem Abbas (ORCID: https://orcid.org/0000-0002-2737-7487)
- Blessing Olamide Taiwo (ORCID: https://orcid.org/0000-0002-6168-1300)
- Muhammad Zaka Emad (ORCID: https://orcid.org/0000-0001-8537-8026)
- N. Rao Cheepurupalli (ORCID: https://orcid.org/0000-0003-2948-0215)
- Mohammed Sazid (ORCID: https://orcid.org/0000-0002-8954-8333)
- Shahab Hosseini (ORCID: https://orcid.org/0000-0001-6101-2484)
- Jitendra Khatti (ORCID: https://orcid.org/0000-0001-9939-4844)
- Yewuhalashet Fissha (ORCID: https://orcid.org/0000-0002-8066-1065)
- N. Sri Chandrahas (ORCID: https://orcid.org/0000-0002-3583-1176)
- Kegang Li (ORCID: https://orcid.org/0000-0002-6961-7258)
- Zemicael Gebrehiwot
- Lei Wang (ORCID: https://orcid.org/0000-0003-0619-6625)
Institutions
- Kunming University of Science and Technology (CN)
- University of Engineering and Technology Lahore (PK)
- Tarbiat Modares University (IR)
- Rajasthan Technical University (IN)
- Federal University of Technology (NG)
- King Abdulaziz University (SA)
- Akita University (JP)
- Karakoram International University (PK)
- G Pulla Reddy Dental College & Hospital (IN)
- Aksum University (ET)
Publication Details
- Journal
- Discover Materials
- Published
- 2024-11-11
- DOI
- https://doi.org/10.1007/s43939-024-00144-z
- Citations
- 14
- Primary Topic
- Rock Mechanics and Modeling
- Type
- article
- Field-Weighted Citation Impact
- 3.77