Bentonite Saturation from Discrete Fractures - Numerical Model of Non-Uniform Swelling over a Gap
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F17%3A00004309" target="_blank" >RIV/46747885:24220/17:00004309 - isvavai.cz</a>
Alternative codes found
RIV/46747885:24620/17:00004309
Result on the web
<a href="https://doi.org/10.1016/j.proeng.2017.05.214" target="_blank" >https://doi.org/10.1016/j.proeng.2017.05.214</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.proeng.2017.05.214" target="_blank" >10.1016/j.proeng.2017.05.214</a>
Alternative languages
Result language
angličtina
Original language name
Bentonite Saturation from Discrete Fractures - Numerical Model of Non-Uniform Swelling over a Gap
Original language description
The nuclear disposal concept is based on compacted bentonite barrier placed into a borehole in the host rock. In crystalline rock, one of the issues is a non-uniform saturation of bentonite caused by inhomogeneity of the rock, typically the flow being concentrated to fractures. We solve a hydro-mechanical model problem in bentonite in the general engineering multiphysics simulation software ANSYS. The elasto-plastic transition as result of saturation is represented by a special non-linear stress-strain curve of elastic model (saturation-dependent weakening). The model is further extended to a contact-problem formulation, where the swelling is possible either as free swelling until filling the gap or as confined state after. It is a synthetic case of one horizontal fracture crossing a vertical borehole. We demonstrated that for large time period, the saturation is limited to a part of the volume, producing a non-uniform stress field in the whole volume. The stress is also controlled by the gap width.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20704 - Energy and fuels
Result continuities
Project
<a href="/en/project/LO1201" target="_blank" >LO1201: DEVELOPMENT OF THE INSTITUTE FOR NANOMATERIALS, ADVANCED TECHNOLOGIES AND INNOVATION</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Procedia Engineering
ISBN
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ISSN
18777058
e-ISSN
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Number of pages
6
Pages from-to
530-535
Publisher name
Elsevier
Place of publication
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Event location
Ostrava
Event date
Jan 1, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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