Generalising the Kozeny-Carman equation to frozen soils

Teng, J; Yan, H; Liang, S; Zhang, S; Sheng, D

Generalising the Kozeny-Carman equation to frozen soils

Teng, J Yan, H Liang, S Zhang, S Sheng, D

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Journal of Hydrology, 2021, 594
Issue Date:: 2021-03-01

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Field	Value	Language
dc.contributor.author	Teng, J
dc.contributor.author	Yan, H
dc.contributor.author	Liang, S
dc.contributor.author	Zhang, S
dc.contributor.author	Sheng, D https://orcid.org/0000-0002-1665-6931
dc.date.accessioned	2022-04-30T03:50:14Z
dc.date.available	2022-04-30T03:50:14Z
dc.date.issued	2021-03-01
dc.identifier.citation	Journal of Hydrology, 2021, 594
dc.identifier.issn	0022-1694
dc.identifier.issn	1879-2707
dc.identifier.uri	http://hdl.handle.net/10453/156853
dc.description.abstract	Coupled migration of water and heat is one of the core problems in studying the frost-heave and thaw-weakening problems in cold regions. Determination of the hydraulic conductivity of frozen soils is the key to understanding this process. The hydraulic conductivity of a frozen soil is related to the liquid water flow in pores among soil solid and pore ice, which differs from the hydraulic conductivity of an unfrozen soil. This study develops a new hydraulic conductivity model for frozen soils based on the Kozeny-Carman equation, which is consistent in form with the hydraulic conductivity model of unfrozen soils. The proposed model is validated against existing models and measured data in the literature. Parametric analysis of the model shows that the unfrozen water saturation and shape coefficient ratio are important parameters that affect the hydraulic conductivity. In addition, the proposed model can be simplified to a power function, which is very easy to use. The new model only requires one fitting parameter and has a clear physical basis.
dc.language	English
dc.publisher	ELSEVIER
dc.relation	National Natural Science Foundation of ChinaU1834206
dc.relation.ispartof	Journal of Hydrology
dc.relation.isbasedon	10.1016/j.jhydrol.2020.125885
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Environmental Engineering
dc.title	Generalising the Kozeny-Carman equation to frozen soils
dc.type	Journal Article
utslib.citation.volume	594
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2022-04-30T03:50:11Z
pubs.publication-status	Published
pubs.volume	594

Abstract:

Coupled migration of water and heat is one of the core problems in studying the frost-heave and thaw-weakening problems in cold regions. Determination of the hydraulic conductivity of frozen soils is the key to understanding this process. The hydraulic conductivity of a frozen soil is related to the liquid water flow in pores among soil solid and pore ice, which differs from the hydraulic conductivity of an unfrozen soil. This study develops a new hydraulic conductivity model for frozen soils based on the Kozeny-Carman equation, which is consistent in form with the hydraulic conductivity model of unfrozen soils. The proposed model is validated against existing models and measured data in the literature. Parametric analysis of the model shows that the unfrozen water saturation and shape coefficient ratio are important parameters that affect the hydraulic conductivity. In addition, the proposed model can be simplified to a power function, which is very easy to use. The new model only requires one fitting parameter and has a clear physical basis.

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http://hdl.handle.net/10453/156853