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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

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • 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

  • ISSN

    18777058

  • e-ISSN

  • Number of pages

    6

  • Pages from-to

    530-535

  • Publisher name

    Elsevier

  • Place of publication

  • Event location

    Ostrava

  • Event date

    Jan 1, 2017

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article