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A Novel Energy-Based Method to Evaluate Layered Rock Brittleness

文献类型：期刊论文

作者Zhong, Caiyin1; Wu, Lizhou2; Li, Shaohong3; Zhou, J. T.4; Li, Z. Q.5
刊名INTERNATIONAL JOURNAL OF GEOMECHANICS
出版日期2023
卷号23期号:1页码:12
ISSN号1532-3641
关键词Rock brittleness Energy theory Layered rock Compression test
DOI10.1061/(ASCE)GM.1943-5622.0002604
英文摘要Rock brittleness plays an important role in rock engineering, thus it is practically valuable to assess rock brittleness accurately. Many brittleness indices have been developed, but few methods are developed for layered rocks. Based on energy evolution, the authors propose a new index for assessing brittleness of layered rocks. The new index indicates that high rock brittleness means elastic energy accumulated effectively before peak and dissipated abruptly after peak. For the sake of verifying the proposed method, a series of compression tests were performed. The results demonstrate that rock brittleness decreases gradually with increasing confining pressure. As orientation angle increases, rock brittleness weakens and then strengthens overall. The brittleness of the specimen with an orientation angle of 0 degrees is slightly higher than that with an orientation angle of 90 degrees. The new index was compared with three existing brittleness indices, and the results indicate that the proposed method can evaluate brittleness of layered rock effectively.
WOS关键词ACOUSTIC-EMISSION CHARACTERISTICS ; HARD-ROCK ; FAILURE PROCESS ; SHALE ; DEFORMATION ; SANDSTONE ; CRITERIA ; COAL ; EVOLUTION ; DAMAGE
资助项目National Natural Science Foundation of China[U20A20314] ; National Natural Science Foundation of China[42277183]
WOS研究方向Engineering
语种英语
出版者ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号WOS:000899892200008
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/106941]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Wu, Lizhou
作者单位1.Chengdu Univ Technol, Coll Environm & Civil Engn, Chengdu 610059, Sichuan, Peoples R China
2.Chongqing Jiaotong Univ, State Key Lab Mt Bridge & Tunnel Engn, Chongqing 400074, Peoples R China
3.Southwest Jiaotong Univ, Dept Geol Engn, Chengdu 610031, Sichuan, Peoples R China
4.Chongqing Jiaotong Univ, State Key Lab Mt Bridge & Tunnel Engn, Chongqing 400074, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zhong, Caiyin,Wu, Lizhou,Li, Shaohong,et al. A Novel Energy-Based Method to Evaluate Layered Rock Brittleness[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2023,23(1):12.
APA Zhong, Caiyin,Wu, Lizhou,Li, Shaohong,Zhou, J. T.,&Li, Z. Q..(2023).A Novel Energy-Based Method to Evaluate Layered Rock Brittleness.INTERNATIONAL JOURNAL OF GEOMECHANICS,23(1),12.
MLA Zhong, Caiyin,et al."A Novel Energy-Based Method to Evaluate Layered Rock Brittleness".INTERNATIONAL JOURNAL OF GEOMECHANICS 23.1(2023):12.

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来源：地质与地球物理研究所

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