Temporary slope stability in London Clay-back analyses of two case histories
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Published:2004
N. Kovacevic, D. W. Hight, D. M. Potts, 2004. "Temporary slope stability in London Clay-back analyses of two case histories", Advances in geotechnical engineering: The Skempton conference: Proceedings of a three day conference on advances in geotechnical engineering, organised by the Institution of Civil Engineers and held at the Royal Geographical Society, London, UK, on 29–31 March 2004
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It is extremely difficult to assess the stability of temporary slopes cut in stiff over-consolidated plastic clays, as they are brittle and prone to progressive failure. A series of finite element (FE) analyses have been undertaken to back analyse two failed temporary slopes cut in the London Clay. It has been found that actual times to failure are still difficult to predict. The previous site history, the presence of a tectonic shear zone, the initial KQ profile and assumed pore water pressures at the excavated clay surface are important factors which influence the stand-up time of temporary slopes.
Abstract
1 Introduction and background
2 Ground conditions
3 Constitutive models and model parameters
4 Finite element analyses
5 Results of the analyses
6 Conclusions and implications for T5
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