Micromechanical modeling of the Compression of the Damaged Zone experiment in the Callovo-Oxfordian formation
<p>A theoretical model of the Compression of the Damaged Zone experiment is proposed. The tools of micromechanics are used to represent the fractured zone. Assuming an elastic behavior of the sound COx claystone and a simplified geometry of the drift, an analytical solution is presented and...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2018-07-01
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| Series: | Advances in Geosciences |
| Online Access: | https://www.adv-geosci.net/45/25/2018/adgeo-45-25-2018.pdf |
| Summary: | <p>A theoretical model of the Compression of the Damaged Zone experiment is
proposed. The tools of micromechanics are used to represent the fractured
zone. Assuming an elastic behavior of the sound COx claystone and a
simplified geometry of the drift, an analytical solution is presented and the
crack closure is determined as a function of distance from the drift wall for
two loading cases: a prescribed 4 MPa pressure and a stress-free
strain with 1 % average value to describe the swelling due to resaturation.
The results are in agreement with experimental observations and give insights
into the heterogeneous character of self-sealing in the damaged zone.</p> |
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| ISSN: | 1680-7340 1680-7359 |