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Numerical modelling of the cyclic behaviour of rock material in the context of underground pumped storage hydroelectricity

Numerical modelling of the cyclic behaviour of rock material in the context of underground pumped storage hydroelectricity
Numerical modelling of the cyclic behaviour of rock material in the context of underground pumped storage hydroelectricity
The use of old mines as a reservoir in the context of pumped storage hydroelectricity rises the question of their stability especially upon cyclic loading due to filling and emptying the mines. This paper presents the formulation of a new constitutive law able to represent the inherently cyclic behaviour of rocks at low confinement. The main features of the behaviour evidenced by experiments in the literature depict a progressive degradation and deformation of the material with the number of cycles. A constitutive law based on a boundary surface model is developed. It represents the brittle failure of the material as well as its progressive degradation. It also encompasses a fatigue resistance under which no degradation of the material holds. Parameters are calibrated with respect to laboratory experiments from the literature. A parametric study is carried out to highlight the role of different parameters.
Rock mechanics, Cyclic Loading, Fatigue, Pumped storage hydroelectricity
CRC Press
Cerfontaine, Benjamin
0730daf4-9d6b-4f2d-a848-a3fc54505a02
Collin, Frédéric
27fa6a2d-f8e2-473f-a3b2-070eca6a9c3a
Charlier, Robert
3bba8221-b05d-431a-8a41-40f1b5dcc7e8
Wuttke, Frank
82744684-530c-4563-a789-dbedb7291ec5
Bauer, Sebastian
08b4d155-7e5b-4263-9a7d-3c3669a74210
Sanchez, Marcelo
952aaa24-2625-4284-ad7a-c089df5d5878
Wuttke, Frank
Bauer, Sebastian
Sanchez, Marcelo
Cerfontaine, Benjamin
0730daf4-9d6b-4f2d-a848-a3fc54505a02
Collin, Frédéric
27fa6a2d-f8e2-473f-a3b2-070eca6a9c3a
Charlier, Robert
3bba8221-b05d-431a-8a41-40f1b5dcc7e8
Wuttke, Frank
82744684-530c-4563-a789-dbedb7291ec5
Bauer, Sebastian
08b4d155-7e5b-4263-9a7d-3c3669a74210
Sanchez, Marcelo
952aaa24-2625-4284-ad7a-c089df5d5878
Wuttke, Frank
Bauer, Sebastian
Sanchez, Marcelo

Cerfontaine, Benjamin, Collin, Frédéric and Charlier, Robert (2016) Numerical modelling of the cyclic behaviour of rock material in the context of underground pumped storage hydroelectricity. In, Wuttke, Frank, Bauer, Sebastian, Sanchez, Marcelo, Wuttke, Frank, Bauer, Sebastian and Sanchez, Marcelo (eds.) Energy Geotechnics: Proceedings of the 1st International Conference on Energy Geotechnics, ICEGT 2016, Kiel, Germany, 29-31 August 2016. CRC Press.

Record type: Book Section

Abstract

The use of old mines as a reservoir in the context of pumped storage hydroelectricity rises the question of their stability especially upon cyclic loading due to filling and emptying the mines. This paper presents the formulation of a new constitutive law able to represent the inherently cyclic behaviour of rocks at low confinement. The main features of the behaviour evidenced by experiments in the literature depict a progressive degradation and deformation of the material with the number of cycles. A constitutive law based on a boundary surface model is developed. It represents the brittle failure of the material as well as its progressive degradation. It also encompasses a fatigue resistance under which no degradation of the material holds. Parameters are calibrated with respect to laboratory experiments from the literature. A parametric study is carried out to highlight the role of different parameters.

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More information

Published date: 8 August 2016
Keywords: Rock mechanics, Cyclic Loading, Fatigue, Pumped storage hydroelectricity

Identifiers

Local EPrints ID: 444221
URI: http://eprints.soton.ac.uk/id/eprint/444221
PURE UUID: 3e477bc8-58fd-4851-b07a-fc757da2809d
ORCID for Benjamin Cerfontaine: ORCID iD orcid.org/0000-0002-4833-9412

Catalogue record

Date deposited: 01 Oct 2020 16:34
Last modified: 02 Oct 2020 01:53

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Contributors

Author: Frédéric Collin
Author: Robert Charlier
Editor: Frank Wuttke
Editor: Sebastian Bauer
Editor: Marcelo Sanchez
Editor: Frank Wuttke
Editor: Sebastian Bauer
Editor: Marcelo Sanchez

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