Experimental investigation on fracturing process of marble under biaxial compression

doi:10.1016/j.jrmge.2020.05.002

	Experimental investigation on fracturing process of marble under biaxial compression
	Wang, Zhaofeng 2,3; Feng, Xia-Ting 1,2; Yang, Chengxiang 1; Zhou, Yangyi 1; Xu, Hong 1; Han, Qiang 1; Gao, Yaohui 2,3
刊名	JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
	2020-10-01
卷号	12 期号:5 页码:943-959
关键词	Fracturing mechanism Biaxial compression Acoustic emission (AE) Moment tensor (MT) Hard rock Stepwise crack
ISSN号	1674-7755
DOI	10.1016/j.jrmge.2020.05.002
英文摘要	In this study, servo-controlled biaxial compression tests were conducted on marble specimens to investigate their failure characteristics and fracturing process. The complete stress-strain curves were obtained, and the three-dimensional (3D) features of the failure surfaces were acquired by 3D laser scanning. Acoustic emission (AE) monitoring and moment tensor (MT) analysis were used in combination to better understand the fracturing mechanism of marble under biaxial compression. It was noted that a type of 3D stepwise cracking behaviour occurred on the fracturing surfaces of the examined specimens. The stress dropped multiple times, and a repeated fracturing mode corresponding to the repeated stress drops in the post-peak regime was observed. Three substages, i.e. stress stabilisation, stress decrease and stress increase, were identified for a single fracturing mode. Then quantitative and statistical analyses of the fracturing process at each substage were discussed. Based on the testing results, it was found that at the stress stabilisation substage, the proportion of mixed-mode fractures increased. At the stress decrease substage, the proportion of mixed-mode fractures decreased, and the tensile or shear fractures increased. At the stress increase substage, the proportion of mixed-mode or tensile fractures decreased, and the shear fractures increased. Finally, a conceptual model for the stepwise crack formation was proposed. (C) 2020 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V.
资助项目	Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)[QYZDJ-SSW-DQC016]
WOS研究方向	Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000580247200003
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24917]
专题	中科院武汉岩土力学所
通讯作者	Feng, Xia-Ting
作者单位	1.Northeastern Univ, Key Lab, Minist Educ Safe Min Deep Met Mines, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhaofeng,Feng, Xia-Ting,Yang, Chengxiang,et al. Experimental investigation on fracturing process of marble under biaxial compression[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2020,12(5):943-959.
APA	Wang, Zhaofeng.,Feng, Xia-Ting.,Yang, Chengxiang.,Zhou, Yangyi.,Xu, Hong.,...&Gao, Yaohui.(2020).Experimental investigation on fracturing process of marble under biaxial compression.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,12(5),943-959.
MLA	Wang, Zhaofeng,et al."Experimental investigation on fracturing process of marble under biaxial compression".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 12.5(2020):943-959.