On the kinematics of 2D tunnel collapse in undrained clay

Osman, A.S.; Mair, R.J.; Bolton, M.D.

doi:10.1680/geot.2006.56.9.585

On the kinematics of 2D tunnel collapse in undrained clay

Osman, A.S.; Mair, R.J.; Bolton, M.D.

Authors

Professor Ashraf Osman ashraf.osman@durham.ac.uk
Professor

R.J. Mair

M.D. Bolton

Abstract

A kinematic plastic solution has been developed for ground movements around a shallow, unlined tunnel embedded within an undrained clay layer. In this solution, the pattern of deformation around the tunnel is idealised by a simple plastic deformation mechanism. Within the boundaries of the deformation mechanism, the soil is required to shear compatibly and continuously with no relative sliding at the boundaries. The soil is regarded here as a rigid plastic (Tresca) material. The plausibility of the proposed mechanism is demonstrated by comparison with limit analysis calculations and centrifuge test results.

Citation

Osman, A., Mair, R., & Bolton, M. (2006). On the kinematics of 2D tunnel collapse in undrained clay. Géotechnique, 56(9), 585-595. https://doi.org/10.1680/geot.2006.56.9.585

Journal Article Type	Article
Publication Date	2006-11
Deposit Date	Jul 15, 2008
Publicly Available Date	Jul 15, 2008
Journal	Géotechnique
Print ISSN	0016-8505
Electronic ISSN	1751-7656
Publisher	ICE Publishing
Peer Reviewed	Peer Reviewed
Volume	56
Issue	9
Pages	585-595
DOI	https://doi.org/10.1680/geot.2006.56.9.585
Keywords	Clays, Deformation, Plasticity, Theoretical analysis, Tunnels.
Publisher URL	http://www.atypon-link.com/doi/pdf/10.1680/geot.2006.56.9.585?cookieSet=1