Institutional Repository of Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences
| A Novel Energy-Based Method to Evaluate Layered Rock Brittleness | |
| Zhong, Caiyin1; Wu, Lizhou2; Li, Shaohong3; Zhou, J. T.4; Li, Z. Q.5 | |
| 2023 | |
| Source Publication | INTERNATIONAL JOURNAL OF GEOMECHANICS
 |
| ISSN | 1532-3641 |
| Volume | 23Issue:1Pages:12 |
| Abstract | 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. |
| Keyword | Rock brittleness Energy theory Layered rock Compression test |
| DOI | 10.1061/(ASCE)GM.1943-5622.0002604 |
| Funding Organization | 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 |
| WOS Keyword | ACOUSTIC-EMISSION CHARACTERISTICS ; HARD-ROCK ; FAILURE PROCESS ; SHALE ; DEFORMATION ; SANDSTONE ; CRITERIA ; COAL ; EVOLUTION ; DAMAGE |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[U20A20314] ; National Natural Science Foundation of China[42277183] |
| Funding Organization | 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 |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Geological |
| WOS ID | WOS:000899892200008 |
| Publisher | ASCE-AMER SOC CIVIL ENGINEERS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.iggcas.ac.cn/handle/132A11/106941 |
| Collection | 页岩气与地质工程院重点实验室 |
| Corresponding Author | Wu, Lizhou |
| Affiliation | 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 |
| Recommended Citation 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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