Frictional Sliding Behaviour of Rough Fracture in Granite Under True Triaxial Loading with Implications for Fault Reactivation
文献类型：期刊论文
| 作者 | Meng, Fanzhen1; Yue, Zhufeng1; Li, Muzi1; Han, Jianhua1; Cai, Qijin1; Wang, Wei1; Hu, Dawei2; Zhang, Chuanqing2 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2023-09-28 |
| 页码 | 21 |
| 关键词 | Fracture slip Acoustic emission Failure mode Deformation Fault reactivation |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-023-03561-3 |
| 英文摘要 | In deep tunnelling, mining and subsurface energy recovery, the reliable estimate of rough fracture (or fault) strength and the potential for reactivation are of vital importance for the assessment of dynamic geo-hazard, such as fault slip rock-burst and induced earthquakes. In this study, true triaxial loading tests were conducted on pre-fractured granite with different orientations to the maximum principal stress, and the fracture slip process was studied with the aid of acoustic emission and deformation monitoring. The reactivation strength was also compared with the theoretical predictions based on the analytical model. Results show that the critical fracture angle for the rock matrix failure and original macro-fracture reactivation is similar to 51 degrees, above which fault slip occurs along the original macro-fracture at a gradually smaller differential stress. The microscopic analysis indicates that new faulting develops traversing the original fracture which becomes more compacted and closed with insignificant damage when the fracture angle is below similar to 44 degrees. The differential stress required for rough fracture reactivation is well predicted by the single plane of weakness theory. In addition, variation of acoustic emission signals (especially AE energy) and deformation along sigma(3) direction with loading time are very consistent, which can be used to analyse the preparatory and evolutionary process of the fracture reactivation. The stress rate decreases whilst deformation rate increases both from a steady state value to a very large value as the fracture is gradually reactivated, accompanied by the b value decreasing from 1.4-2 to 0.4-0.6, which can be used as precursors for the dynamic fault slip. The findings in the present study will provide new insights into the mechanics of rough fracture reactivation in deep tunnelling, mining and underground resource extraction. |
| 资助项目 | We gratefully acknowledge financial support from the National Science Foundation of China under Grant Nos. 51879135, 52279116 and 52179114, the National Key Research and Development Program of China (Grant No. 2022YFE0137200) and Taishan Scholars Program ([51879135] ; We gratefully acknowledge financial support from the National Science Foundation of China under Grant Nos. 51879135, 52279116 and 52179114, the National Key Research and Development Program of China (Grant No. 2022YFE0137200) and Taishan Scholars Program ([52279116] ; We gratefully acknowledge financial support from the National Science Foundation of China under Grant Nos. 51879135, 52279116 and 52179114, the National Key Research and Development Program of China (Grant No. 2022YFE0137200) and Taishan Scholars Program ([52179114] ; National Science Foundation of China[2022YFE0137200] ; National Key Research and Development Program of China[2019KJG002] ; National Key Research and Development Program of China[2019RKB01083] ; Taishan Scholars Program |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001075054400001 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39620]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Meng, Fanzhen; Li, Muzi |
| 作者单位 | 1.Qingdao Univ Technol, Coll Sci, Qingdao 266033, Shandong, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, Fanzhen,Yue, Zhufeng,Li, Muzi,et al. Frictional Sliding Behaviour of Rough Fracture in Granite Under True Triaxial Loading with Implications for Fault Reactivation[J]. ROCK MECHANICS AND ROCK ENGINEERING,2023:21. |
| APA | Meng, Fanzhen.,Yue, Zhufeng.,Li, Muzi.,Han, Jianhua.,Cai, Qijin.,...&Zhang, Chuanqing.(2023).Frictional Sliding Behaviour of Rough Fracture in Granite Under True Triaxial Loading with Implications for Fault Reactivation.ROCK MECHANICS AND ROCK ENGINEERING,21. |
| MLA | Meng, Fanzhen,et al."Frictional Sliding Behaviour of Rough Fracture in Granite Under True Triaxial Loading with Implications for Fault Reactivation".ROCK MECHANICS AND ROCK ENGINEERING (2023):21. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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