Numerical Modelling of Permafrost Degradation Effects on Rock Slopes
Rockfalls and rockslides are being observed with increased frequency in high mountains during last decades. Permafrost degradation, driven by global warming, is considered to be the main triggering factor. This paper describes a series of Distinct Element simulations of a selected rock face, where t...
Published in: | International Journal of Civil Infrastructure |
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Online Access: | https://hdl.handle.net/11311/1248939 https://doi.org/10.11159/ijci.2023.008 |
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ftpolimilanoiris:oai:re.public.polimi.it:11311/1248939 2024-01-28T10:06:23+01:00 Numerical Modelling of Permafrost Degradation Effects on Rock Slopes Calvetti, Francesco Boffelli, William Calvetti, Francesco Boffelli, William 2023 https://hdl.handle.net/11311/1248939 https://doi.org/10.11159/ijci.2023.008 eng eng volume:6 firstpage:58 lastpage:66 numberofpages:9 journal:INTERNATIONAL JOURNAL OF CIVIL INFRASTRUCTURE https://hdl.handle.net/11311/1248939 doi:10.11159/ijci.2023.008 info:eu-repo/semantics/closedAccess Rockmass Joint persistence Permafrost Distinct Element Method Shear strength reduction info:eu-repo/semantics/article 2023 ftpolimilanoiris https://doi.org/10.11159/ijci.2023.008 2024-01-03T17:44:59Z Rockfalls and rockslides are being observed with increased frequency in high mountains during last decades. Permafrost degradation, driven by global warming, is considered to be the main triggering factor. This paper describes a series of Distinct Element simulations of a selected rock face, where the presence of ice in joints is taken into consideration. These simulations are part of a wider multi-scale approach to modelling of potentially rock slopes. Previous research at the material scale (ice and frozen soil) allowed defining an original failure criterion for continuous and discontinuous rock joints filled with ice. This criterion is now included in large scale DEM model of punta Gnifetti (4554 m asl - Monte Rosa massif) in order to reproducing the actual configuration through back-analysis based on geomechanical investigation, and assessing evolutionary scenarios driven by the increase of persistence and of temperature. Relevant numerical issues, regarding boundary conditions and model generation are preliminary discussed, as well. Article in Journal/Newspaper Ice permafrost RE.PUBLIC@POLIMI - Research Publications at Politecnico di Milano Monte Rosa ENVELOPE(162.850,162.850,-70.917,-70.917) International Journal of Civil Infrastructure |
institution |
Open Polar |
collection |
RE.PUBLIC@POLIMI - Research Publications at Politecnico di Milano |
op_collection_id |
ftpolimilanoiris |
language |
English |
topic |
Rockmass Joint persistence Permafrost Distinct Element Method Shear strength reduction |
spellingShingle |
Rockmass Joint persistence Permafrost Distinct Element Method Shear strength reduction Calvetti, Francesco Boffelli, William Numerical Modelling of Permafrost Degradation Effects on Rock Slopes |
topic_facet |
Rockmass Joint persistence Permafrost Distinct Element Method Shear strength reduction |
description |
Rockfalls and rockslides are being observed with increased frequency in high mountains during last decades. Permafrost degradation, driven by global warming, is considered to be the main triggering factor. This paper describes a series of Distinct Element simulations of a selected rock face, where the presence of ice in joints is taken into consideration. These simulations are part of a wider multi-scale approach to modelling of potentially rock slopes. Previous research at the material scale (ice and frozen soil) allowed defining an original failure criterion for continuous and discontinuous rock joints filled with ice. This criterion is now included in large scale DEM model of punta Gnifetti (4554 m asl - Monte Rosa massif) in order to reproducing the actual configuration through back-analysis based on geomechanical investigation, and assessing evolutionary scenarios driven by the increase of persistence and of temperature. Relevant numerical issues, regarding boundary conditions and model generation are preliminary discussed, as well. |
author2 |
Calvetti, Francesco Boffelli, William |
format |
Article in Journal/Newspaper |
author |
Calvetti, Francesco Boffelli, William |
author_facet |
Calvetti, Francesco Boffelli, William |
author_sort |
Calvetti, Francesco |
title |
Numerical Modelling of Permafrost Degradation Effects on Rock Slopes |
title_short |
Numerical Modelling of Permafrost Degradation Effects on Rock Slopes |
title_full |
Numerical Modelling of Permafrost Degradation Effects on Rock Slopes |
title_fullStr |
Numerical Modelling of Permafrost Degradation Effects on Rock Slopes |
title_full_unstemmed |
Numerical Modelling of Permafrost Degradation Effects on Rock Slopes |
title_sort |
numerical modelling of permafrost degradation effects on rock slopes |
publishDate |
2023 |
url |
https://hdl.handle.net/11311/1248939 https://doi.org/10.11159/ijci.2023.008 |
long_lat |
ENVELOPE(162.850,162.850,-70.917,-70.917) |
geographic |
Monte Rosa |
geographic_facet |
Monte Rosa |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_relation |
volume:6 firstpage:58 lastpage:66 numberofpages:9 journal:INTERNATIONAL JOURNAL OF CIVIL INFRASTRUCTURE https://hdl.handle.net/11311/1248939 doi:10.11159/ijci.2023.008 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.11159/ijci.2023.008 |
container_title |
International Journal of Civil Infrastructure |
_version_ |
1789333240543182848 |