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The influence of shear heating on the development of creeping landslides

The influence of shear heating on the development of creeping landslides
The influence of shear heating on the development of creeping landslides
Large-scale landslides may exhibit a creeping phase possibly followed by catastrophic failure. An example of a landslide that exhibited such behaviour was the Vaiont landslide that occurred in Italy, 1963, where the final phase of catastrophic collapse was preceded by several months of creep. Shear heating of the slip plane is a possible mechanism that has been invoked to explain the severity of the final collapse, however its possible effect on the creeping phase has not been fully investigated. In this context we present a model for the creeping movement of a landslide idealized as a rigid mass sliding on a thin clay layer. Heat production and excess pore pressure generation due to frictional heating, as well as their diffusion, are taken into account. The behaviour of the clay is modelled using rate process theory, which is a general theory quantifying time-dependent soil deformation on the basis of micromechanical considerations. As a first step, uniform infinite slopes are considered and the model is used to explore factors that influence the transition from an initial phase of creep to a final catastrophic phase.
rate process, rictional heating, creeping landslides
978-3-319-09056-6
1491-1494
Springer
Vinayagamoorthy, S.
3cc222b9-1bf0-47af-9ee5-d53a699bc06f
Zervos, A.
9e60164e-af2c-4776-af7d-dfc9a454c46e
Lollino, G.
Giordan, D.
Crosta, G.
Corominas, J.
Azzam, R.
Wasowski, J.
Sciarra, N.
Vinayagamoorthy, S.
3cc222b9-1bf0-47af-9ee5-d53a699bc06f
Zervos, A.
9e60164e-af2c-4776-af7d-dfc9a454c46e
Lollino, G.
Giordan, D.
Crosta, G.
Corominas, J.
Azzam, R.
Wasowski, J.
Sciarra, N.

Vinayagamoorthy, S. and Zervos, A. (2015) The influence of shear heating on the development of creeping landslides. Lollino, G., Giordan, D., Crosta, G., Corominas, J., Azzam, R., Wasowski, J. and Sciarra, N. (eds.) In Engineering Geology for Society and Territory - Volume 2. Springer. pp. 1491-1494 . (doi:10.1007/978-3-319-09057-3_264).

Record type: Conference or Workshop Item (Paper)

Abstract

Large-scale landslides may exhibit a creeping phase possibly followed by catastrophic failure. An example of a landslide that exhibited such behaviour was the Vaiont landslide that occurred in Italy, 1963, where the final phase of catastrophic collapse was preceded by several months of creep. Shear heating of the slip plane is a possible mechanism that has been invoked to explain the severity of the final collapse, however its possible effect on the creeping phase has not been fully investigated. In this context we present a model for the creeping movement of a landslide idealized as a rigid mass sliding on a thin clay layer. Heat production and excess pore pressure generation due to frictional heating, as well as their diffusion, are taken into account. The behaviour of the clay is modelled using rate process theory, which is a general theory quantifying time-dependent soil deformation on the basis of micromechanical considerations. As a first step, uniform infinite slopes are considered and the model is used to explore factors that influence the transition from an initial phase of creep to a final catastrophic phase.

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More information

Submitted date: 15 October 2013
Accepted/In Press date: 9 May 2014
Published date: 4 January 2015
Venue - Dates: IAEG XII CONGRESS, Engineering Geology for Society and Territory, Torino, Italy, 2014-09-15 - 2014-09-19
Keywords: rate process, rictional heating, creeping landslides
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 374899
URI: http://eprints.soton.ac.uk/id/eprint/374899
ISBN: 978-3-319-09056-6
PURE UUID: 17fa7866-f984-4928-ae5f-89cf10c3d7bd
ORCID for A. Zervos: ORCID iD orcid.org/0000-0002-2662-9320

Catalogue record

Date deposited: 05 Mar 2015 12:52
Last modified: 15 Mar 2024 03:16

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Contributors

Author: S. Vinayagamoorthy
Author: A. Zervos ORCID iD
Editor: G. Lollino
Editor: D. Giordan
Editor: G. Crosta
Editor: J. Corominas
Editor: R. Azzam
Editor: J. Wasowski
Editor: N. Sciarra

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