Mechanical properties and dynamic breaking mechanism of plateau frozen soil
AbstractThis work studies and evaluates the mechanical properties of frozen soil, FS, from Yulong mine in Tibet, under different freezing temperatures ranging from −12 °C to −1 °C, using experimental tests. In addition, the effects of temperature and time on the freezing depth of FS were investigate...
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2023
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Online Access: | https://doi.org/10.1080/19475705.2022.2164225 https://doaj.org/article/73fb2b07132c45f5b529c7b35a779fe0 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:73fb2b07132c45f5b529c7b35a779fe0 2023-05-15T17:57:52+02:00 Mechanical properties and dynamic breaking mechanism of plateau frozen soil Fuqiang Ren Changhao Hao Bo Sun Zhenyang Xu 2023-12-01 https://doi.org/10.1080/19475705.2022.2164225 https://doaj.org/article/73fb2b07132c45f5b529c7b35a779fe0 en eng Taylor & Francis Group doi:10.1080/19475705.2022.2164225 1947-5713 1947-5705 https://doaj.org/article/73fb2b07132c45f5b529c7b35a779fe0 undefined Geomatics, Natural Hazards & Risk, Vol 14, Iss 1 (2023) Plateau permafrost freezing temperature mechanical properties breaking mechanism mechanical model envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2023 fttriple https://doi.org/10.1080/19475705.2022.2164225 2023-01-22T19:15:51Z AbstractThis work studies and evaluates the mechanical properties of frozen soil, FS, from Yulong mine in Tibet, under different freezing temperatures ranging from −12 °C to −1 °C, using experimental tests. In addition, the effects of temperature and time on the freezing depth of FS were investigated. Based on the cantilever beam theory, the mechanical model of FS breaking under blasting stress wave was established, and the theoretical formula for the fracture length (FL) of FS was deduced. Moreover, the major influences on FL were analyzed. The results showed that the frozen depth curves at different temperatures were approximately linear in single or double segments, and the lower the temperature, the greater the early freezing rate. Additionally, the uniaxial compression strength, elastic modulus, and tensile strength of FS were found to decrease with the increase in temperature. The findings highlight that the shear strength, cohesion, and internal friction angle decreased first and then increased with the increase in temperature. It was shown that the thickness, friction coefficient, weight density, and tensile strength of FS are positively correlated with the FL, while there is an inverse proportionality with respect to the pressure of the detonation wave. Article in Journal/Newspaper permafrost Unknown Geomatics, Natural Hazards and Risk 14 1 |
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language |
English |
topic |
Plateau permafrost freezing temperature mechanical properties breaking mechanism mechanical model envir geo |
spellingShingle |
Plateau permafrost freezing temperature mechanical properties breaking mechanism mechanical model envir geo Fuqiang Ren Changhao Hao Bo Sun Zhenyang Xu Mechanical properties and dynamic breaking mechanism of plateau frozen soil |
topic_facet |
Plateau permafrost freezing temperature mechanical properties breaking mechanism mechanical model envir geo |
description |
AbstractThis work studies and evaluates the mechanical properties of frozen soil, FS, from Yulong mine in Tibet, under different freezing temperatures ranging from −12 °C to −1 °C, using experimental tests. In addition, the effects of temperature and time on the freezing depth of FS were investigated. Based on the cantilever beam theory, the mechanical model of FS breaking under blasting stress wave was established, and the theoretical formula for the fracture length (FL) of FS was deduced. Moreover, the major influences on FL were analyzed. The results showed that the frozen depth curves at different temperatures were approximately linear in single or double segments, and the lower the temperature, the greater the early freezing rate. Additionally, the uniaxial compression strength, elastic modulus, and tensile strength of FS were found to decrease with the increase in temperature. The findings highlight that the shear strength, cohesion, and internal friction angle decreased first and then increased with the increase in temperature. It was shown that the thickness, friction coefficient, weight density, and tensile strength of FS are positively correlated with the FL, while there is an inverse proportionality with respect to the pressure of the detonation wave. |
format |
Article in Journal/Newspaper |
author |
Fuqiang Ren Changhao Hao Bo Sun Zhenyang Xu |
author_facet |
Fuqiang Ren Changhao Hao Bo Sun Zhenyang Xu |
author_sort |
Fuqiang Ren |
title |
Mechanical properties and dynamic breaking mechanism of plateau frozen soil |
title_short |
Mechanical properties and dynamic breaking mechanism of plateau frozen soil |
title_full |
Mechanical properties and dynamic breaking mechanism of plateau frozen soil |
title_fullStr |
Mechanical properties and dynamic breaking mechanism of plateau frozen soil |
title_full_unstemmed |
Mechanical properties and dynamic breaking mechanism of plateau frozen soil |
title_sort |
mechanical properties and dynamic breaking mechanism of plateau frozen soil |
publisher |
Taylor & Francis Group |
publishDate |
2023 |
url |
https://doi.org/10.1080/19475705.2022.2164225 https://doaj.org/article/73fb2b07132c45f5b529c7b35a779fe0 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Geomatics, Natural Hazards & Risk, Vol 14, Iss 1 (2023) |
op_relation |
doi:10.1080/19475705.2022.2164225 1947-5713 1947-5705 https://doaj.org/article/73fb2b07132c45f5b529c7b35a779fe0 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1080/19475705.2022.2164225 |
container_title |
Geomatics, Natural Hazards and Risk |
container_volume |
14 |
container_issue |
1 |
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1766166373264785408 |