Comparative modelling approaches of hydro-mechanical processes in sealing experiments at the Tournemire URL

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F17%3A00482345" target="_blank" >RIV/68145535:_____/17:00482345 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s12665-016-6324-8" target="_blank" >https://link.springer.com/article/10.1007/s12665-016-6324-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12665-016-6324-8" target="_blank" >10.1007/s12665-016-6324-8</a>

Result language

angličtina

Original language name

Comparative modelling approaches of hydro-mechanical processes in sealing experiments at the Tournemire URL

Original language description

In this paper, a comparative modelling exercise from the DECOVALEX-2015 project is presented. The exercise is based on in situ experiments, performed at the Tournemire Underground Research Laboratory (URL), run by the IRSN (Institut de Radioprotection et de Surete Nucleaire), in France. These experiments aim at identifying conditions (e.g. technical specifications, design, construction, and defects) that will affect the long-term performance of swelling clay-based sealing systems, which is of key importance for the safety of underground nuclear waste disposal facilities. A number of materials are being considered as seals, the current work focusses on a 70/30 MX80 bentonite-sand mixture initially compacted at a dry density of 1.94 Mg/m(3). The performance of the sealing plug involves at least three different important components, which are the hydro-mechanical behaviour of the bentonite-sand core, the overall permeability of the surrounding argillite, and the influence of the technological gap between the core and the argillite. Two particular tests have been selected for a comparative modelling exercise: the WT-1 test, which was designed to study the rock mass permeability, and the PT-A1 test, which aimed at quantifying the evolution of the hydro-mechanical field within the bentonite-sand core. A number of independent teams have worked towards modelling these experiments, using different codes and input parameters calibrated on additional small-scale laboratory experiments. Their results are compared and discussed.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10102 - Applied mathematics

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Environmental Earth Sciences

ISSN

1866-6280

e-ISSN

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Volume of the periodical

76

Issue of the periodical within the volume

2

Country of publishing house

DE - GERMANY

Number of pages

19

Pages from-to

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UT code for WoS article

000393021400020

EID of the result in the Scopus database

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