Inverse Hydraulic And Transport Model of Groundwater Recovery Experiment Using Mixed-dimensional Concept

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F21%3A00008888" target="_blank" >RIV/46747885:24220/21:00008888 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41330/21:88586

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S1365160921001209" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1365160921001209</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijrmms.2021.104734" target="_blank" >10.1016/j.ijrmms.2021.104734</a>

Result language

angličtina

Original language name

Inverse Hydraulic And Transport Model of Groundwater Recovery Experiment Using Mixed-dimensional Concept

Original language description

Understanding evolution of groundwater hydraulic and chemical conditions is important for safety assessment of radioactive waste disposal. Perturbations to groundwater can occur due to the construction and operation of the underground facility. The initial perturbations and their recovery after the tunnel closure were observed in the Groundwater REcovery Experiment in Tunnel (GREET) in Mizunami, Japan, at 500-m depth in granite. In a 100-m-long tunnel, 50 m was isolated by building a plug. Aside from other measurement and exploration data, groundwater pressures and chemical composition were monitored in boreholes with 24 packer sections. This work used numerical modelling to better understand and be able to predict the observed water flow and solute transport phenomena. The model covered 100-m scale around the tunnel and was divided into a continuum far-field domain and a near-field domain with deterministic discrete fractures and matrix blocks. A mixed-hybrid finite element solution was used with independent degrees of freedom for 3D and 2D elements. Modelling started with a blind prediction followed by a calibration (inverse model) for drainage and flooding experiment phases. The inverse hydraulic model fitted the more/less communicating sections and estimated transmissivity and conductivity parameters that are consistent for the two phases. The model sensitivity on transport parameters was insufficient for the inverse model, which can use only simplified measured evolution to avoid noisy data.

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

20701 - Environmental and geological engineering, geotechnics

Project

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Continuities

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year

2021

Confidentiality

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

Name of the periodical

International Journal of Rock Mechanics and Mining Sciences

ISSN

1365-1609

e-ISSN

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Volume of the periodical

144

Issue of the periodical within the volume

AUG

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

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UT code for WoS article

000675895200004

EID of the result in the Scopus database

2-s2.0-85107152479