Accession Number DE2012-1048273
Title Constitutive Relationships for Elastic Deformation of Clay Rock: Data Analysis.
Publication Date Apr 2011
Media Count 15p
Personal Author H. H. Liu J. Rutqvist J. T. Birkholzer
Abstract Clay rock has been considered as a potential host rock for geological disposal of high-level nuclear waste throughout the world, because it has low permeability, low diffusion coefficient, high retention capacity for radionuclides, and the capability to self-seal fractures induced by tunnel excavation (Fouche et al., 2004; Patriarche et al., 2004; Meier et al., 2000; Barnichon et al., 2005). Coupled hydraulic and mechanical processes have a significant impact on the long-term safety of a clay repository and are largely controlled by constitutive relationships for the host rock, or relationships among hydraulic and mechanical properties. The major objective of this note is to present and evaluate several physically based constitutive relationships for elastic deformation of the indurated clay rock (Tsang et al., 2005), with a focus on fractures. Note however that indurated clay rock also involves non-elastic deformation under certain conditions (Alonso and Alcoverro, 2002). To the best of our knowledge, studies on constitutive relationships for fractures in clay rock are very rare in the literature.
Keywords Argillite
Clays
Data analysis
Deformation
Evaluation
Fractures
High level radioactive wastes
Opalinus clay
Radioactive waste disposal
Radioisotopes
Rocks
Simulation
Strains
Swelling
Transport


 
Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 77G - Radioactive Wastes & Radioactivity
48F - Geology & Geophysics
Corporate Author Lawrence Berkeley National Lab., CA. Earth Sciences Division.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1303
Contract Number DE-AC02-05CH11231

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