# Undrained stability of a circular tunnel where the shear strength increases linearly with depth

@inproceedings{Wilson2011UndrainedSO, title={Undrained stability of a circular tunnel where the shear strength increases linearly with depth}, author={Daniel W. Wilson and Andrew J. Abbo and S. W. Sloan and Andrei Lyamin}, year={2011} }

- Published 2011

This paper investigates the undrained stability of a plane strain circular tunnel in clay, where the shear strength profile is assumed to increase linearly with depth. Stability solutions for a variety of geometries and soil conditions are found using rigid-block upper bound methods as well as finite element limit analysis (which gives both upper and lower bounds). The latter procedures employ a discrete form of the bound theorems of classical plasticity, use a bespoke conic programming scheme… CONTINUE READING

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