Development of Approaches for Modelling Coupled Thermal–hydraulic–mechanical–chemical Processes in Single Granite Fracture Experiments

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F16%3A00003585" target="_blank" >RIV/46747885:24220/16:00003585 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s12665-016-6117-0" target="_blank" >https://link.springer.com/article/10.1007/s12665-016-6117-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12665-016-6117-0" target="_blank" >10.1007/s12665-016-6117-0</a>

Result language

angličtina

Original language name

Development of Approaches for Modelling Coupled Thermal–hydraulic–mechanical–chemical Processes in Single Granite Fracture Experiments

Original language description

The geological formation immediately surroundinga nuclear waste disposal facility has the potentialto undergo a complex set of physical and chemical processesstarting from construction and continuing manyyears after closure. The DECOVALEX project (DEvelopmentof COupled models and their VALidation againstEXperiments) was established and maintained by a varietyof waste management organizations, regulators andresearch organizations to help improve capabilities in experimental interpretation, numerical modelling and blindprediction of complex coupled systems. In the presentround of DECOVALEX (D-2015), one component of TaskC1 has considered the detailed experimental work ofYasuhara et al. (Appl Geochem 26:2074–2088, 2011),wherein three natural fractures in Mizunami granite aresubject to variable fluid flows, mechanical confining pressureand different applied temperatures. This paper presentsa synthesis of the completed work of six separateresearch teams, building on work considering a singlesynthetic fracture in novaculite. A range of approaches arepresented including full geochemical reactive transportmodelling and 2D and 3D high-resolution coupled thermo–hydro–mechanical–chemical (THMC) models. The workshows that reasonable fits can be obtained to the experimentaldata using a variety of approaches, but considerableuncertainty remains as to the relative importance of competingprocess sets. The work also illustrates that a goodunderstanding of fracture topography, interaction with thegranite matrix, a good understanding of the geochemistryand the associated multi-scale THMC process behaviours isa necessary pre-cursor to considering predictive models ofsuch a system.

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

10511 - Environmental sciences (social aspects to be 5.7)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

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

75

Issue of the periodical within the volume

19

Country of publishing house

DE - GERMANY

Number of pages

21

Pages from-to

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UT code for WoS article

000385135100014

EID of the result in the Scopus database

2-s2.0-84989332469