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Bulletin of Engineering Geology and the Environment

Roof stability in flat-ceiling cavities in unsaturated soils under steady infiltrations

  • 01-01-2026
  • Original Paper
Published in:
Authors
Jingshu Xu
Jiahui Deng
Qiankai Ren
Linghao Qi
Xiuli Du
Published in
Bulletin of Engineering Geology and the Environment | Issue 1/2026

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Abstract

This article delves into the critical factors affecting the stability of tunnel roofs in unsaturated soils under steady infiltrations. It highlights the importance of matric suction and the hysteresis effect on the shear strength of unsaturated soils, which are often neglected in conventional stability analyses. The study introduces a modified Mohr-Coulomb criterion with a tension cut-off to better account for the nonlinear distribution of matric suction and its impact on tunnel roof stability. Through detailed parametric analyses, the article explores how various factors such as soil strength, infiltration rates, and the hysteresis effect influence the stability of tunnel roofs. The findings provide valuable insights into the complex behavior of unsaturated soils and offer practical recommendations for assessing and enhancing tunnel roof stability in unsaturated geological conditions.
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previous article Water softening effect on the creep behavior of mineral components in red shale in Kaiyang phosphate mining area, China
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Title
Roof stability in flat-ceiling cavities in unsaturated soils under steady infiltrations
Authors
Jingshu Xu
Jiahui Deng
Qiankai Ren
Linghao Qi
Xiuli Du
Publication date
01-01-2026
Publisher
Springer Berlin Heidelberg
Published in
Bulletin of Engineering Geology and the Environment / Issue 1/2026
Print ISSN: 1435-9529
Electronic ISSN: 1435-9537
DOI
https://doi.org/10.1007/s10064-025-04741-x
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