'Qualitative and time analysis of the gaseous constituents transport processes in a micro-tunnel on the basis of in-situ measurements'
| العنوان: | 'Qualitative and time analysis of the gaseous constituents transport processes in a micro-tunnel on the basis of in-situ measurements' |
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| المؤلفون: | Jacques de Lamare, Agnès Vinsot, Antoine Pasteau |
| المساهمون: | Laboratoire d'Etude de la Corrosion Aqueuse (LECA), Service de la Corrosion et du Comportement des Matériaux dans leur Environnement (SCCME), Département de Physico-Chimie (DPC), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Département de Physico-Chimie (DPC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Agence Nationale pour la Gestion des Déchets Radioactifs (ANDRA), Institut National Polytechnique de Grenoble (INPG) |
| المصدر: | Progress in Nuclear Energy Progress in Nuclear Energy, 2022, 151, pp.104359. ⟨10.1016/j.pnucene.2022.104359⟩ |
| بيانات النشر: | Elsevier BV, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Nuclear Energy and Engineering, [SDE.IE]Environmental Sciences/Environmental Engineering, Energy Engineering and Power Technology, [CHIM.MATE]Chemical Sciences/Material chemistry, Safety, Risk, Reliability and Quality, [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation, Waste Management and Disposal |
| الوصف: | International audience; This paper describes air pressure, relative humidity (RH), temperature and oxygen molar fraction (xO$_2$) measurements that have been carried out over several years in a hundred meter long and 75 centimeters diameter micro-tunnel (MT) at the Andra Meuse/Haute-Marne underground research laboratory (MHM URL). Sensors were placed all along, every twenty meters inside the MT, and in the access drift. RH and xO$_2$ time evolutions exhibit very complicated profiles, showing many singularities. These features can be well explained by taking into account mainly the corrosion of the steel casings, the water evaporation from the surrounding saturated clay and a leak between the head of the MT excavation and the access drift. Airflow through the leak is driven by the drift pressure seasonal and short time fluctuations. A simple model involving coupled infinite and finite reservoirs made it possible to reproduce xO$_2$ evolution and to calculate the air fluxes associated. Drift pressure variations induce longitudinal compression-dilatation processes in the system that are closely estimated using suitable analytical formulas. By taking into account diffusion driven leaks at the casings interfaces, it was possible to build a global model from which the results compare very well with experimental data. |
| تدمد: | 0149-1970 |
| DOI: | 10.1016/j.pnucene.2022.104359 |
| DOI: | 10.1016/j.pnucene.2022.104359⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cff9be8259340fa86454235b34e178bc https://doi.org/10.1016/j.pnucene.2022.104359 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....cff9be8259340fa86454235b34e178bc |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 01491970 |
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| DOI: | 10.1016/j.pnucene.2022.104359 |