Deformation Rate Effects in the Circumferential Strain-Controlled Post-Peak Loading Tests
文献类型：期刊论文
| 作者 | Cui, Guanghao3; Meng, Fanzhen2; Wang, Wei3; Liu, Pengyuan2; Wen, Yuantao2; Yue, Zhufeng3; Zhou, Hui1; Zhang, Liming3 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2025-04-14 |
| 页码 | 22 |
| 关键词 | Circumferential deforming rate Brittle rock Post-peak curve Failure mode Acoustic emission (AE) characteristics |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-025-04528-2 |
| 英文摘要 | To investigate the influence of circumferential deformation rate (CR) on the post-peak failure behavior of brittle rock, standard granite and slate specimens were tested under conventional triaxial compression at different CRs. Acoustic emission (AE) was continuously monitored to compare the internal damage evolution during the test, and thin sections of the post-failure specimens were made to examine the micro-structures. The test results reveal that the granite exhibits mixed Class I and II curves in the circumferential strain-control (CSC) tests at various CRs, whereas the slate is characterized by a complete Class II curve. For granite, the portion of the Class I curve increases while the Class II curve decreases as CR increases. At lower CRs, the Class II curve develops immediately after the peak, whereas at higher CRs, the Class I curve occurs first before the occurrence of the Class II curve. At the highest CR, the stress-strain curve of slate is comparable to that observed under axial strain-control (ASC) loading. The AE analysis indicates that the overall AE hit rate and energy rate increase with increasing CR, indicating that a higher CR leads to a more violent failure process for both rock types. Additionally, the failure modes of the two rock specimens transform from dispersive fractures to pure shear as CR increases. When comparing the peak strength in CSC tests with different CRs, it is found that the CR influences the peak strength in a complex mode. This study also demonstrates that the generation of the Class II curve is influenced not only by CR but also by rock type and confining pressure. For very brittle rocks, more elastic energy is stored within the rock before the peak, which facilitates the generation of a complete Class II curve in the post-peak. The findings of this study will contribute to a deeper understanding of Class II behavior in rocks. |
| 资助项目 | National Nature Science Foundation of China[42272334] ; National Nature Science Foundation of China[52279116] ; National Nature Science Foundation of China[52179114] ; National Key Research and Development Program of China[2022YFE0137200] ; Taishan Scholars Program[2019KJG002] ; Taishan Scholars Program[2019RKB01083] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering Safety[SKLGME023003] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001466883500001 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35667]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Meng, Fanzhen |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Qingdao Univ Technol, Coll Sci, Qingdao 266033, Shandong, Peoples R China 3.Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui, Guanghao,Meng, Fanzhen,Wang, Wei,et al. Deformation Rate Effects in the Circumferential Strain-Controlled Post-Peak Loading Tests[J]. ROCK MECHANICS AND ROCK ENGINEERING,2025:22. |
| APA | Cui, Guanghao.,Meng, Fanzhen.,Wang, Wei.,Liu, Pengyuan.,Wen, Yuantao.,...&Zhang, Liming.(2025).Deformation Rate Effects in the Circumferential Strain-Controlled Post-Peak Loading Tests.ROCK MECHANICS AND ROCK ENGINEERING,22. |
| MLA | Cui, Guanghao,et al."Deformation Rate Effects in the Circumferential Strain-Controlled Post-Peak Loading Tests".ROCK MECHANICS AND ROCK ENGINEERING (2025):22. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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