Brief communication: The influence of mica-rich rocks on the shearstrength of ice-filled discontinuities
A temperature- and stress-dependent failure criterion for ice-filled rock (limestone) joints was proposed in 2018 as an essential tool to assess and model the stability of degrading permafrost rock slopes. To test the applicability to other rocks, we now conducted experiments with mica schist/gneiss...
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ftcopernicus:oai:publications.copernicus.org:tcd82990 2023-05-15T16:37:11+02:00 Brief communication: The influence of mica-rich rocks on the shearstrength of ice-filled discontinuities Mamot, Philipp Weber, Samuel Lanz, Maximilian Krautblatter, Michael 2020-02-14 application/pdf https://doi.org/10.5194/tc-2020-18 https://www.the-cryosphere-discuss.net/tc-2020-18/ eng eng doi:10.5194/tc-2020-18 https://www.the-cryosphere-discuss.net/tc-2020-18/ eISSN: 1994-0424 Text 2020 ftcopernicus https://doi.org/10.5194/tc-2020-18 2020-02-17T15:42:00Z A temperature- and stress-dependent failure criterion for ice-filled rock (limestone) joints was proposed in 2018 as an essential tool to assess and model the stability of degrading permafrost rock slopes. To test the applicability to other rocks, we now conducted experiments with mica schist/gneiss which provide the maximum expected deviation of lithological effects on the shear strength due to strong negative surface charges affecting the rock-ice interface. Retesting 120 samples from −10 to −0.5 °C and 100 to 400 kPa, we show that even for controversial rocks the failure criterion stays unaltered, suggesting that the failure criterion is transferable to mostly all rock types. Text Ice permafrost Copernicus Publications: E-Journals |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
A temperature- and stress-dependent failure criterion for ice-filled rock (limestone) joints was proposed in 2018 as an essential tool to assess and model the stability of degrading permafrost rock slopes. To test the applicability to other rocks, we now conducted experiments with mica schist/gneiss which provide the maximum expected deviation of lithological effects on the shear strength due to strong negative surface charges affecting the rock-ice interface. Retesting 120 samples from −10 to −0.5 °C and 100 to 400 kPa, we show that even for controversial rocks the failure criterion stays unaltered, suggesting that the failure criterion is transferable to mostly all rock types. |
format |
Text |
author |
Mamot, Philipp Weber, Samuel Lanz, Maximilian Krautblatter, Michael |
spellingShingle |
Mamot, Philipp Weber, Samuel Lanz, Maximilian Krautblatter, Michael Brief communication: The influence of mica-rich rocks on the shearstrength of ice-filled discontinuities |
author_facet |
Mamot, Philipp Weber, Samuel Lanz, Maximilian Krautblatter, Michael |
author_sort |
Mamot, Philipp |
title |
Brief communication: The influence of mica-rich rocks on the shearstrength of ice-filled discontinuities |
title_short |
Brief communication: The influence of mica-rich rocks on the shearstrength of ice-filled discontinuities |
title_full |
Brief communication: The influence of mica-rich rocks on the shearstrength of ice-filled discontinuities |
title_fullStr |
Brief communication: The influence of mica-rich rocks on the shearstrength of ice-filled discontinuities |
title_full_unstemmed |
Brief communication: The influence of mica-rich rocks on the shearstrength of ice-filled discontinuities |
title_sort |
brief communication: the influence of mica-rich rocks on the shearstrength of ice-filled discontinuities |
publishDate |
2020 |
url |
https://doi.org/10.5194/tc-2020-18 https://www.the-cryosphere-discuss.net/tc-2020-18/ |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-2020-18 https://www.the-cryosphere-discuss.net/tc-2020-18/ |
op_doi |
https://doi.org/10.5194/tc-2020-18 |
_version_ |
1766027484499804160 |