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Title: Characterising and modelling the excavation damaged zone (EDZ) in crystalline rock in the context of radioactive waste disposal

Abstract

This paper describes current knowledge about the nature of and potential for thermo-hydro-mechanical-chemical modelling of the Excavation Damaged Zone (EDZ) around the excavations for an underground radioactive waste repository. In the first part of the paper, the disturbances associated with excavation are explained, together with reviews of Workshops that have been held on the subject. In the second part of the paper, the results of a DECOVALEX research programme on modelling the EDZ are presented. Four research teams used four different models to simulate the complete stress-strain curve for Avro granite from the Swedish Aespoe Hard Rock Laboratory. Subsequent research extended the work to computer simulation of the evolution of the repository using a 'wall block model' and a 'near-field model'. This included assessing the evolution of stress, failure and permeability and time dependent effects during repository evolution. As discussed, all the computer models are well suited to sensitivity studies for evaluating the influence of their respective supporting parameters on the complete stress-strain curve for rock and for modelling the EDZ.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Earth Sciences Division
OSTI Identifier:
951007
Report Number(s):
LBNL-1688E
Journal ID: ISSN 0943-0105; TRN: US0902103
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Environmental Geology
Additional Journal Information:
Journal Name: Environmental Geology; Journal ID: ISSN 0943-0105
Country of Publication:
United States
Language:
English
Subject:
54; 58; COMPUTERIZED SIMULATION; COMPUTERS; DISTURBANCES; EXCAVATION; GRANITES; IGNEOUS ROCKS; METAMORPHIC ROCKS; PERMEABILITY; RADIOACTIVE WASTE DISPOSAL; RADIOACTIVE WASTES; SENSITIVITY

Citation Formats

Hudson, J A, Backstrom, A, Rutqvist, J, Jing, L, Backers, T, Chijimatsu, M, Christiansson, R, Feng, X -T, Kobayashi, A, Koyama, T, Lee, H -S, Neretnieks, I, Pan, P Z, Rinne, M, and Shen, B -T. Characterising and modelling the excavation damaged zone (EDZ) in crystalline rock in the context of radioactive waste disposal. United States: N. p., 2008. Web. doi:10.1007/s00254-008-1554-z.
Hudson, J A, Backstrom, A, Rutqvist, J, Jing, L, Backers, T, Chijimatsu, M, Christiansson, R, Feng, X -T, Kobayashi, A, Koyama, T, Lee, H -S, Neretnieks, I, Pan, P Z, Rinne, M, & Shen, B -T. Characterising and modelling the excavation damaged zone (EDZ) in crystalline rock in the context of radioactive waste disposal. United States. https://doi.org/10.1007/s00254-008-1554-z
Hudson, J A, Backstrom, A, Rutqvist, J, Jing, L, Backers, T, Chijimatsu, M, Christiansson, R, Feng, X -T, Kobayashi, A, Koyama, T, Lee, H -S, Neretnieks, I, Pan, P Z, Rinne, M, and Shen, B -T. 2008. "Characterising and modelling the excavation damaged zone (EDZ) in crystalline rock in the context of radioactive waste disposal". United States. https://doi.org/10.1007/s00254-008-1554-z. https://www.osti.gov/servlets/purl/951007.
@article{osti_951007,
title = {Characterising and modelling the excavation damaged zone (EDZ) in crystalline rock in the context of radioactive waste disposal},
author = {Hudson, J A and Backstrom, A and Rutqvist, J and Jing, L and Backers, T and Chijimatsu, M and Christiansson, R and Feng, X -T and Kobayashi, A and Koyama, T and Lee, H -S and Neretnieks, I and Pan, P Z and Rinne, M and Shen, B -T},
abstractNote = {This paper describes current knowledge about the nature of and potential for thermo-hydro-mechanical-chemical modelling of the Excavation Damaged Zone (EDZ) around the excavations for an underground radioactive waste repository. In the first part of the paper, the disturbances associated with excavation are explained, together with reviews of Workshops that have been held on the subject. In the second part of the paper, the results of a DECOVALEX research programme on modelling the EDZ are presented. Four research teams used four different models to simulate the complete stress-strain curve for Avro granite from the Swedish Aespoe Hard Rock Laboratory. Subsequent research extended the work to computer simulation of the evolution of the repository using a 'wall block model' and a 'near-field model'. This included assessing the evolution of stress, failure and permeability and time dependent effects during repository evolution. As discussed, all the computer models are well suited to sensitivity studies for evaluating the influence of their respective supporting parameters on the complete stress-strain curve for rock and for modelling the EDZ.},
doi = {10.1007/s00254-008-1554-z},
url = {https://www.osti.gov/biblio/951007}, journal = {Environmental Geology},
issn = {0943-0105},
number = ,
volume = ,
place = {United States},
year = {Wed Oct 01 00:00:00 EDT 2008},
month = {Wed Oct 01 00:00:00 EDT 2008}
}