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May 9, 2026Scientific Reports0 citationsOpen Access

Deformation mechanisms of an existing tunnel adjacent to deep basement supported by circular beams in soft clays

SQShengguo QiBWBuxiang Wang

Key Points

  • This research aims to analyze how existing tunnels deform when nearby deep basements are constructed, particularly focusing on the effects of basement geometry.
  • Developed a simplified design chart to categorize tunnel deformation influence zones.
  • Analyzed the linear relationship between tunnel movements and basement geometry.
  • Assessed excavation-induced tunnel deformations for practical engineering applications.
  • The study highlights a direct linear relationship between tunnel movements and basement geometry.
  • The proposed design chart aids engineers in predicting and assessing tunnel deformations effectively.
  • Provides necessary guidelines to implement protective measures during basement design.

Abstract

is approximately 0.6. A linear relationship is observed between tunnel movements and basement geometry. A simplified design chart is developed to categorize tunnel deformation influence zones. This chart provides a practical tool for engineers to assess excavation-induced tunnel deformations and implement necessary protective measures during the design of deep basements adjacent to existing tunnels.

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Cite This Study

Qi et al. (2026) studied this question.

synapsesocial.com/papers/69fecf16b9154b0b82876252https://doi.org/10.1038/s41598-026-50853-z
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