An Objective Crack Initiation Stress Identification Method for Brittle Rock Under Compression Using a Reference Line

doi:10.1007/s00603-021-02479-y

	An Objective Crack Initiation Stress Identification Method for Brittle Rock Under Compression Using a Reference Line
	Tang, Minghao 1; Wang, Guibin 2; Chen, Shiwan 3; Yang, Chunhe 1,2
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2021-06-03
期号	-页码:16
关键词	Crack initiation stress Lateral strain Brittle rocks Lateral strain response Lateral strain interval response Uniaxial compression
ISSN号	0723-2632
DOI	10.1007/s00603-021-02479-y
英文摘要	The crack initiation stress (CI), a threshold stress at which brittle rock starts to become damaged during compression, has been widely studied. It can be used to estimate the spalling strength of tunnels in brittle rock masses. Many methods based on stress-strain curves and acoustic emission data have been proposed to identify the CI, and these methods have good statistical consistency. In the present study, the influence of varying the Poisson's ratio on the value of the CI is analyzed using the crack volumetric strain (CVS) method, and the physical meaning of the lateral strain response (LSR) method is explained. Based on the LSR method, a more stable lateral strain interval response (LSIR) method is proposed to determine the CI. We analyzed the CI of granite samples from two deep boreholes in the Beishan area, the site of China's underground research laboratory (URL). The results show that the mean CI values determined by our proposed method are in good agreement with the results from the LSR method. The standard deviation and correlation analysis show that the CI values obtained by the proposed method have a smaller dispersion and a higher independence than those from the LSR method.
资助项目	Key Projects of the National Natural Science Foundation of China[51234004] ; Project of Decommissioning of Nuclear Facilities and Radioactive Waste Management ; National Key Research and Development Program of China[2017YFC0804601] ; National Key Research and Development Program of China[2018YFC0808403]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000657559900001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/27403]
专题	中科院武汉岩土力学所
作者单位	1.Chongqing Univ, Sch Resources & Safety Engn, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 3.Guizhou Univ, Coll Resources & Environm Engn, Guiyang 550025, Guizhou, Peoples R China
推荐引用方式 GB/T 7714	Tang, Minghao,Wang, Guibin,Chen, Shiwan,et al. An Objective Crack Initiation Stress Identification Method for Brittle Rock Under Compression Using a Reference Line[J]. ROCK MECHANICS AND ROCK ENGINEERING,2021(-):16.
APA	Tang, Minghao,Wang, Guibin,Chen, Shiwan,&Yang, Chunhe.(2021).An Objective Crack Initiation Stress Identification Method for Brittle Rock Under Compression Using a Reference Line.ROCK MECHANICS AND ROCK ENGINEERING(-),16.
MLA	Tang, Minghao,et al."An Objective Crack Initiation Stress Identification Method for Brittle Rock Under Compression Using a Reference Line".ROCK MECHANICS AND ROCK ENGINEERING .-(2021):16.