Performance of large diameter storage and sealing structures in a deep exothermic waste repository
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| Titel: | Performance of large diameter storage and sealing structures in a deep exothermic waste repository |
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| Autoren: | Alonso, Matías, Vaunat, Jean, Olivella Pastallé, Sebastià, Gens Solé, Antonio, Vu, Minh-Ngoc |
| Quelle: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Verlagsinformationen: | 2022. |
| Publikationsjahr: | 2022 |
| Schlagwörter: | Residus radioactius -- Emmagatzematge, Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Política i gestió ambiental::Gestió de residus, Argillaceous rocks, Radioactive waste disposal in the ground, THM modeling, Bentonite, Sealing system, Thermo-hydro-mechanical modeling, Desenvolupament humà i sostenible::Política i gestió ambiental::Gestió de residus [Àrees temàtiques de la UPC], Nuclear waste disposal |
| Beschreibung: | The paper presents the work carried out to assess and simulate numerically the phenomenology behind the response of large diameter intermediate-level long-lived nuclear waste (ILW-LL) storage galleries and the corresponding sealing structures. Large scale models were created for this purpose, using advanced constitutive models, accounting for complex coupled phenomena, and representing geometric details at decimeter scale. These challenging simulations provided qualitative and quantitative results on key questions related to the design of this kind of structures, such as the extension of the damaged zone around the gallery, the impact of the thermal load on the water pressure variation around the excavation and on the surrounding geological layers, the duration of the natural hydration phase and the swelling pressure development of the sealing core, and the seals system global stability. |
| Publikationsart: | Conference object |
| Dateibeschreibung: | application/pdf |
| Sprache: | English |
| Zugangs-URL: | http://hdl.handle.net/2117/371372 https://hdl.handle.net/2117/371372 |
| Dokumentencode: | edsair.dedup.wf.002..6437f3b75ec78f4af7ad1d2c481cb55c |
| Datenbank: | OpenAIRE |
Nájsť tento článok vo Web of Science | Abstract: | The paper presents the work carried out to assess and simulate numerically the phenomenology behind the response of large diameter intermediate-level long-lived nuclear waste (ILW-LL) storage galleries and the corresponding sealing structures. Large scale models were created for this purpose, using advanced constitutive models, accounting for complex coupled phenomena, and representing geometric details at decimeter scale. These challenging simulations provided qualitative and quantitative results on key questions related to the design of this kind of structures, such as the extension of the damaged zone around the gallery, the impact of the thermal load on the water pressure variation around the excavation and on the surrounding geological layers, the duration of the natural hydration phase and the swelling pressure development of the sealing core, and the seals system global stability. |
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