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Investigation for Influence of Pressure on Face Stability of Mega Tunnel

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Proceedings of Geotechnical Challenges in Mining, Tunneling and Underground Infrastructures (ICGMTU 2021)

Part of the book series: Lecture Notes in Civil Engineering ((LNCE,volume 228))

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Abstract

Urbanization in Developing countries raise the demand of smart and efficient infrastructure facility. Due to faster growth rate, urban area meets many challenges like traffic congestion and thereby increased travel time. To cope with these, effective utilization of underground spaces is a need of time. Mega tunnel plays an important role to satisfy this need, as it is large diameter tunnel whose diameter is greater than 10 m. Mega Tunnel may facilitate with multi operating transport to prove its benefit for society. Tunnel excavation using Tunnel Boring Machine (TBM), is frequently performed to avoid surface traffic disturbance and to minimize construction time during project execution period. Face Stability of such type of tunnels has been emerging topic for researchers, as this issue get more critical with the increase in tunnel diameter. This increment of Critical cover to Diameter (C/D) ratio leads to increase in indirect construction cost. This paper focuses on the investigation of adequate pressures to be applied on Mega Tunnel to ascertain the ground induced settlement at various C/D ratios. Three-dimensional finite element analysis was performed by using Midas Gtx Nx software with different C/D ratios and pressure parameters for soft soil. Parametric study had been done on 15 m diameter tunnel. The conclusions were drawn based on 95 analytical models with five different cases. This study concluded that adequate application of pressure minimizes the C/D ratio to stabilize the face of Mega Tunnel, which can be proven to minimize the construction cost in practical use.

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Authors and Affiliations

  1. College of Engineering, Pune, India

    Shilpa Kulkarni

  2. Department of Civil Engineering, College of Engineering, Pune, India

    M. S. Ranadive

Authors
  1. Shilpa Kulkarni
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  2. M. S. Ranadive
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Corresponding author

Correspondence to Shilpa Kulkarni .

Editor information

Editors and Affiliations

  1. Department of Mining Engineering, Indian Institute of Technology (BHU), Varanasi, India

    Amit Kumar Verma

  2. Geotropik Universiti Teknologi Malaysia, Johor Bahru, Malaysia

    Edy Tonnizam Mohamad

  3. Innovative Consultancy and Research Pte. Ltd.,, Singapore, Singapore

    Ramesh Murlidhar Bhatawdekar

  4. Central Institute of Mining and Fuel Research, Nagpur, India

    Avtar Krishen Raina

  5. School of Engineering, Information Technology and Physical Sciences, Federation University, Ballarat, VIC, Australia

    Manoj Khandelwal

  6. Department of Civil Engineering, University of Malaya, Kuala Lumpur, Malaysia

    Danial Armaghani

  7. Department of Geology, Indian Institute of Technology (Indian School of Mines), Dhanbad, Dhanbad, India

    Kripamoy Sarkar

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Kulkarni, S., Ranadive, M.S. (2022). Investigation for Influence of Pressure on Face Stability of Mega Tunnel. In: Verma, A.K., et al. Proceedings of Geotechnical Challenges in Mining, Tunneling and Underground Infrastructures. ICGMTU 2021. Lecture Notes in Civil Engineering, vol 228. Springer, Singapore. https://doi.org/10.1007/978-981-16-9770-8_22

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  • DOI: https://doi.org/10.1007/978-981-16-9770-8_22

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-16-9769-2

  • Online ISBN: 978-981-16-9770-8

  • eBook Packages: EngineeringEngineering (R0)

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