| Issue |
E3S Web Conf.
Volume 195, 2020
4th European Conference on Unsaturated Soils (E-UNSAT 2020)
|
|
|---|---|---|
| Article Number | 04015 | |
| Number of page(s) | 7 | |
| Section | Special Session on Energy Geotechnics | |
| DOI | https://doi.org/10.1051/e3sconf/202019504015 | |
| Published online | 16 October 2020 | |
Numerically reproduced HE-E experiment of Mont Terri project by Thermo-Hydro-Mechanical coupled model
1 Obayashi Corporation, Shinagawa Intercity Tower B, 2-15-2, Konan, Minato-ku, Tokyo, Japan
2 Geosphere Environmental Technology Corp., NCO Kanda-awajicho-Bldg. 3th Floor, 2-1 Kanda-awajicho Chiyoda-ku Tokyo, Japan
3 Nagra, Hardstrasse 73, Postfach 280, 5430 Wettingen, Switzerland
* Corresponding author: sato.shin.ro@obayashi.co.jp
In this study, numerical simulations of HE-E experiment in Mont Terri rock laboratory were performed with Thermo–Hydro–Mechanical (THM) coupled processes. The aim of this study is to validate modelling, understand THM coupled behaviour and verify applicability of material parameters obtained by a column test to the full-scale model. The results of THM and TH coupled analysis are compared, and the influence of fluid and thermal terms/factors on mechanical behaviour is discussed. The analysis code used for THM and TH coupled analysis was CODE_BRIGHT. An axisymmetric analytical model, which allowed modelling of two heaters, was used for the THM and TH coupled model, and their results were compared. As a result, a better reproducibility of relative humidity in the Engineered Barrier System (EBS) and pore water pressure of the bedrock was achieved by performing mechanical coupling. Furthermore, experimental conditions were simulated more realistically, since two heathers and different backfill materials were also modelled in the analysis.
© The Authors, published by EDP Sciences 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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