The ‘thermal semi‐conductor’ effect of crushed rocks
Abstract Coarse rock layers are widespread in periglacial environments and can lower the temperature of underlying ground. We show that the cooling effect of closed and sloping rock layers is in the form of Rayleigh‐Bénard convection, while that of open and inclined rock layers is via the ‘chimney e...
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Online Access: | http://dx.doi.org/10.1002/ppp.575 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.575 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.575 |
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crwiley:10.1002/ppp.575 2024-09-15T18:30:01+00:00 The ‘thermal semi‐conductor’ effect of crushed rocks Guodong, Cheng Yuanming, Lai Zhizhong, Sun Fan, Jiang 2007 http://dx.doi.org/10.1002/ppp.575 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.575 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.575 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 18, issue 2, page 151-160 ISSN 1045-6740 1099-1530 journal-article 2007 crwiley https://doi.org/10.1002/ppp.575 2024-08-27T04:30:41Z Abstract Coarse rock layers are widespread in periglacial environments and can lower the temperature of underlying ground. We show that the cooling effect of closed and sloping rock layers is in the form of Rayleigh‐Bénard convection, while that of open and inclined rock layers is via the ‘chimney effect’ and wind‐forced convection. Cooling has been observed in numerical simulations, laboratory models and field mock‐up experiments. Coarse rocks were widely used in the construction of the Qinghai‐Xizang Railroad and temperature monitoring of their performance indicates that they do have a cooling effect on embankments. The advantages of utilising such materials are many, including high efficiency, ease of installation, environmental friendliness and relatively low cost. It is recommended that they be used in engineering projects in sensitive permafrost areas as a cooling agent and/or a countermeasure against possible global warming. Copyright © 2007 John Wiley & Sons, Ltd. Article in Journal/Newspaper permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 18 2 151 160 |
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English |
description |
Abstract Coarse rock layers are widespread in periglacial environments and can lower the temperature of underlying ground. We show that the cooling effect of closed and sloping rock layers is in the form of Rayleigh‐Bénard convection, while that of open and inclined rock layers is via the ‘chimney effect’ and wind‐forced convection. Cooling has been observed in numerical simulations, laboratory models and field mock‐up experiments. Coarse rocks were widely used in the construction of the Qinghai‐Xizang Railroad and temperature monitoring of their performance indicates that they do have a cooling effect on embankments. The advantages of utilising such materials are many, including high efficiency, ease of installation, environmental friendliness and relatively low cost. It is recommended that they be used in engineering projects in sensitive permafrost areas as a cooling agent and/or a countermeasure against possible global warming. Copyright © 2007 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Guodong, Cheng Yuanming, Lai Zhizhong, Sun Fan, Jiang |
spellingShingle |
Guodong, Cheng Yuanming, Lai Zhizhong, Sun Fan, Jiang The ‘thermal semi‐conductor’ effect of crushed rocks |
author_facet |
Guodong, Cheng Yuanming, Lai Zhizhong, Sun Fan, Jiang |
author_sort |
Guodong, Cheng |
title |
The ‘thermal semi‐conductor’ effect of crushed rocks |
title_short |
The ‘thermal semi‐conductor’ effect of crushed rocks |
title_full |
The ‘thermal semi‐conductor’ effect of crushed rocks |
title_fullStr |
The ‘thermal semi‐conductor’ effect of crushed rocks |
title_full_unstemmed |
The ‘thermal semi‐conductor’ effect of crushed rocks |
title_sort |
‘thermal semi‐conductor’ effect of crushed rocks |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1002/ppp.575 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.575 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.575 |
genre |
permafrost Permafrost and Periglacial Processes |
genre_facet |
permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 18, issue 2, page 151-160 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.575 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
18 |
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2 |
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151 |
op_container_end_page |
160 |
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1810471512672567296 |