Estimation of the effective thermal properties of cracked rocks

doi:10.1080/19648189.2015.1084386

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	Estimation of the effective thermal properties of cracked rocks
	Zhang, Fan 2; Zhou, Hui 1; Liu, Haitao 1; Hu, Dawei 1; Lu, Jingjing 1; Yang, Fanjie 1
刊名	EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
	2016
卷号	20 期号:8 页码:954-970
关键词	effective thermal conductivity effective thermal expansion cracked rocks discrete method geo-engineering applications
ISSN号	1964-8189
DOI	10.1080/19648189.2015.1084386
英文摘要	In geo-engineering applications, the effective thermal properties (ETPs) of cracked rock are strongly dependent on the configuration of the cracks and the thermal properties of the saturating fluid, which differs from that of the rock matrix. In this study, methods for predicting the ETPs of cracked rock are investigated. The effects of various factors such as the crack distribution, the type of saturating fluid and the applied stress on the ETPs are analysed. Formulas for the effective thermal conductivity (ETC) and the effective thermal expansion (ETE) are developed in a discrete form based on the homogenisation method, where the interactions of the cracks in different directions are neglected. To analyse the effects of the crack distribution and the type of saturating fluid on the ETC and the ETE, an example of saturated rock with one family of cracks is considered. The results reveal that the crack distribution has a significant anisotropic effect on both the ETC and the ETE. The difference in the bulk moduli of the rock matrix and the fluid in the cracks also has an important effect on the ETE. The behaviour of the ETC and the ETE of granite at various levels of stress is analysed with triaxial compression tests. The growth of microcracks induced by the applied stresses causes significant anisotropy in both the ETC and the ETE. This study provides insight into the factors that affect the ETC and the ETE and methods to estimate the ETC and the ETE of cracked rock in geo-engineering applications.
WOS研究方向	Engineering
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000380129000008
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3811]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Hubei Univ Technol, Sch Civil Engn & Architecture
推荐引用方式 GB/T 7714	Zhang, Fan,Zhou, Hui,Liu, Haitao,et al. Estimation of the effective thermal properties of cracked rocks[J]. EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,2016,20(8):954-970.
APA	Zhang, Fan,Zhou, Hui,Liu, Haitao,Hu, Dawei,Lu, Jingjing,&Yang, Fanjie.(2016).Estimation of the effective thermal properties of cracked rocks.EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,20(8),954-970.
MLA	Zhang, Fan,et al."Estimation of the effective thermal properties of cracked rocks".EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING 20.8(2016):954-970.