Bentonite Saturation from Discrete Fractures - Numerical Model of Non-Uniform Swelling over a Gap

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dc.contributor.authorHančilová Ilonacs
dc.contributor.authorHokr Milancs
dc.contributor.authorNovák Josefcs
dc.date.accessioned2018-09-25T12:11:46Z
dc.date.available2018-09-25T12:11:46Z
dc.date.issued2017cs
dc.description.abstractThe 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 stressstrain 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.en
dc.format.extent6cs
dc.identifier.doi10.1016/j.proeng.2017.05.214
dc.identifier.issn18777058cs
dc.identifier.orcid0000-0003-3793-3341 Hokr Milan
dc.identifier.urihttps://dspace.tul.cz/handle/15240/30857
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S1877705817323548
dc.language.isoengcs
dc.publisherElseviercs
dc.relation.ispartofseries1cs
dc.relation.urihttps://doi.org/10.1016/j.proeng.2017.05.214cs
dc.subjectbentonitecs
dc.subjectcoupled processcs
dc.subjecthydrationcs
dc.subjectmodellingcs
dc.subjectswellingcs
dc.titleBentonite Saturation from Discrete Fractures - Numerical Model of Non-Uniform Swelling over a Gapen
dc.titleBentonite Saturation from Discrete Fractures - Numerical Model of Non-Uniform Swelling over a Gapcs
local.citation.epage530-535cs
local.citation.spage530-535cs
local.identifier.publikace4309
local.relation.issue1cs
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