Short-term structural response of a model shaft liner during shaft breakout in clay
Ucur, M., Divall, S. 
ORCID: 0000-0001-9212-5115 & Stallebrass, S. E. ORCID: 0000-0002-3747-9524 (2026).
Short-term structural response of a model shaft liner during shaft breakout in clay.
Paper presented at the YGES2026, 22-23 Jun 2026, London, UK.
Abstract
Underground networks (i.e., tunnels and shafts) are connected by short drives known as junctions. The construction of a lateral opening at a junction is referred to as a shaft breakout. The design of a shaft breakout can be complex, often resulting in the adoption of conservative design practices. The application of reinforcement around the opening is common practice to ensure that the additional loading can be safely resisted. This paper presents results obtained from geotechnical centrifuge modelling of a simulated shaft breakout. The model shaft consists of an aluminium tube with a diameter of 101.6 mm and a depth of 254.0 mm, founded in a sample of overconsolidated Speswhite kaolin clay.
| Publication Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Departments: | School of Science & Technology School of Science & Technology > Department of Engineering |
| SWORD Depositor: |
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