Effect of Mechanical Damage on the Thermal Conductivity of Granite

doi:10.1007/s00603-019-01956-9

	Effect of Mechanical Damage on the Thermal Conductivity of Granite
	Li, Zheng-Wei 3; Feng, Xia-Ting 3; Zhang, Yan-Jun 2; Gong, Yan-Hua 3; Zhu, Guo-Qiang 1
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2020-03-01
卷号	53 期号:3 页码:1039-1051
关键词	Thermal conductivity Mechanical damage Optical scanning Thermal inhomogeneity Water saturation
ISSN号	0723-2632
DOI	10.1007/s00603-019-01956-9
英文摘要	In this work, the effect of mechanical damage on the thermal conductivity of granite was experimentally investigated. Granite samples were artificially damaged through cyclic loading and unloading tests, with the strain evolution and acoustic emission activity monitored simultaneously. P-Wave velocity of the damaged samples was tested to evaluate the damage effect. Thermal conductivity of the undamaged and damaged granite samples was tested using optical scanning method. The influence of mechanical damage on thermal conductivity was analyzed. Thermal conductivity difference in different testing directions was analyzed based on the experiment results in six scanning lines on the two surfaces of each disk sample. The results indicate that thermal conductivity of damaged samples reduced compared with that of the undamaged samples, while the thermal inhomogeneity factor increased. Thermal conductivity increased in water-saturated condition for both undamaged and damaged samples. The increased rate of damaged samples was bigger than that of the undamaged samples. The mechanical damage treatment caused the increase in the thermal conductivity difference in different testing directions. The difference decreased when samples were water saturated. Research results in this work can provide better knowledge to the evolution mechanism of thermal conductivity of engineering rock masses.
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000522733700005
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/23818]
专题	中科院武汉岩土力学所
通讯作者	Li, Zheng-Wei
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Jilin Univ, Coll Construct Engn, Changchun 130026, Peoples R China 3.Northeastern Univ, Minist Educ Safe Min Deep Met Mines, Key Lab, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Li, Zheng-Wei,Feng, Xia-Ting,Zhang, Yan-Jun,et al. Effect of Mechanical Damage on the Thermal Conductivity of Granite[J]. ROCK MECHANICS AND ROCK ENGINEERING,2020,53(3):1039-1051.
APA	Li, Zheng-Wei,Feng, Xia-Ting,Zhang, Yan-Jun,Gong, Yan-Hua,&Zhu, Guo-Qiang.(2020).Effect of Mechanical Damage on the Thermal Conductivity of Granite.ROCK MECHANICS AND ROCK ENGINEERING,53(3),1039-1051.
MLA	Li, Zheng-Wei,et al."Effect of Mechanical Damage on the Thermal Conductivity of Granite".ROCK MECHANICS AND ROCK ENGINEERING 53.3(2020):1039-1051.