A simple model to represent damage and fracturing in rock salt caused by heating and subsequent cooling: Understanding brine inflow data from the Brine Availability Test in Salt (BATS)
Notice bibliographique
Résumé
Salt deposits are being considered in several countries as potential host rocks for deep geological disposal facilities (GDFs) for radioactive waste. Although the very low porosity and lack of water content are favorable properties of salt that make it well-suited for this purpose, brine is present in amounts that are not insignificant when considering potential corrosion of waste canisters and pathways for radionuclide migration. It is therefore important to understand the processes and mechanisms that can cause brine to flow into the GDF. In this paper a relatively simple model is described that represents damage and fracturing in rock salt caused by heating and subsequent cooling. The model is used to simulate brine inflow to a heated borehole, using data from the Brine Availability Test in Salt (BATS) which was carried out at the Waste Isolation Pilot Plant (WIPP) in New Mexico, USA. Key characteristics of BATS and other, similar, experiments are increased brine production during periods of elevated temperature and a very large but short-lived increase shortly after the heat source is removed. The latter is not directly relevant to the disposal of heat-generating radioactive waste, where the heat source will gradually diminish over time, but the ability to simulate this phenomenon demonstrates an understanding of the coupled thermo-hydro-mechanical (THM) processes that operate in salt-based systems. The modelling demonstrates that a certain level of complexity is needed (such as the inclusion of viscoplastic effects and damage) to capture the key behaviors, but complexity can be tailored to the purposes of the study. In this case, a 1D model and a simple representation of the damage directly linked to permeability change was sufficient to gain a detailed understanding of the system. This includes the importance of the excavation damage zone (EDZ) in controlling the availability of brine. • The ability to model the impact of temperature changes on brine availability in salt-based geological disposal facilities is important in demonstrating an understanding of the coupled thermo-hydro-mechanical (THM) processes that operate in such systems. • Viscoplastic effects are an important mechanism that are needed to capture key behavior when heating is stopped. • Model complexity (e.g. the representation of micro-cracking and damage) can be tailored to the purposes of the study. • The engineered damage zone (EDZ) surrounding excavations plays a key role in controlling the availability of brine.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».