Experimental and theoretical study on freeze-thawing damage propagation of saturated rocks

doi:10.1142/S0217979208047523

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	Experimental and theoretical study on freeze-thawing damage propagation of saturated rocks
	Liu, Quansheng; Xu, Guangmiao; Liu, Xiaoyan
	2008
会议日期	SEP 16-19, 2007
会议地点	Daejeon, SOUTH KOREA
关键词	cold region frozen rock experimental research freeze-thaw cycle
期号	9-11
DOI	10.1142/S0217979208047523
页码	1853-1858
英文摘要	The freezing and thawing cycles tests were conducted on red sandstone and shale. In this paper, freezing-thawing damage propagation processes are analyzed, and two deterioration modes, i.e. scaling mode for red sandstone and fracturing mode for shale, are suggested. The uniaxial compression tests are also conducted on the two types of rock subjected to different freeze-thaw cycles at room temperature. It is shown that the uniaxial compression strength and the elastic modulus of rocks at low-temperature depended on the number of freeze-thaw cycles. The mechanism and influence factors of rock deterioration due to freeze-thaw are analyzed, and the damage process of rock should be divided into two coupled parts: rocks damage due to freeze-thaw cycle as well as the damage propagation caused by stress erosion. The damage evolvement equations for the two rocks are established, and the constitutive equations for the two types of rock subjected to freeze-thaw are deduced, accordingly. It is approved that the constitutive model considering the freeze-thaw damage is credible and can be used for the following theory analysis.
会议录	INTERNATIONAL JOURNAL OF MODERN PHYSICS B
会议录出版者	WORLD SCIENTIFIC PUBL CO PTE LTD
会议录出版地	SINGAPORE
语种	英语
WOS研究方向	Physics
WOS记录号	WOS:000256702600127
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4505]
专题	岩土力学所知识全产出_会议论文国家重点实验室知识产出_会议论文
作者单位	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式 GB/T 7714	Liu, Quansheng,Xu, Guangmiao,Liu, Xiaoyan. Experimental and theoretical study on freeze-thawing damage propagation of saturated rocks[C]. 见:. Daejeon, SOUTH KOREA. SEP 16-19, 2007.