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Experimental investigation on fracturing process of marble under biaxial compression

文献类型：期刊论文

作者Wang, Zhaofeng2,3; Feng, Xia-Ting1,2; Yang, Chengxiang1; Zhou, Yangyi1; Xu, Hong1; Han, Qiang1; Gao, Yaohui2,3
刊名JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
出版日期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
DOI10.1016/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
WOS记录号WOS:000580247200003
出版者SCIENCE PRESS
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.

入库方式： OAI收割

来源：武汉岩土力学研究所

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