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Erschienen in:

01.06.2021 | Technical paper

Experimental investigation on greenfield surface settlement in cohesionless medium due to staged tunneling

verfasst von: Manojit Samanta, V. A. Sawant

Erschienen in: Innovative Infrastructure Solutions | Ausgabe 2/2021

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Abstract

Understanding the ground response during tunneling is essential to evaluate the safety of existing infrastructures. Soil–tunnel interactions are a complex phenomenon and depend on the various parameters of soil and tunnel. Physical modeling plays an essential role in understanding the influence of different parameters on the surface settlement due to tunneling. Physical modeling in controlled conditions allows us to investigate and distinctly identify the effect of soil parameters and tunnel on the ground response. This paper presents a novel experimental procedure to simulate the ground loss phenomenon due to tunneling. The developed scaled-down model can simulate the different percentage of volume loss for progressive tunnel construction under 1 g. The ground response has been studied for various volume loss percentages (1–10%) and different soil cover-to-diameter ratio of a tunnel in cohesionless medium. Ground response in terms of the maximum surface settlement, width of transverse surface settlement trough, transverse, and longitudinal influence zone of surface settlement have been measured and reported. Results from the present study match reasonably well with the other reported studies. The reasonability of the results demonstrates the applicability of the current approach to study the ground response due to the tunnel's staged construction.

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Titel: Experimental investigation on greenfield surface settlement in cohesionless medium due to staged tunneling
verfasst von: Manojit Samanta
V. A. Sawant
Publikationsdatum: 01.06.2021
Verlag: Springer International Publishing
Erschienen in: Innovative Infrastructure Solutions / Ausgabe 2/2021
Print ISSN: 2364-4176
Elektronische ISSN: 2364-4184
DOI: https://doi.org/10.1007/s41062-021-00475-3

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