Rock strength weakening subject to principal stress rotation: Experimental and numerical investigations
文献类型：期刊论文
| 作者 | Liu, Huandui3,4; Wang, Guibin3; Yang, Chunhe3; Zhang, Junyue1; Chen, Shiwan2 |
| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 16期号:9页码:3544-3557 |
| 关键词 | China Principal stress rotation (PSR) Fracture mechanics Hollow cylinder torsional apparatus for rock (HCAR) Particle flow method Rock strength |
| ISSN号 | 1674-7755 |
| DOI | 10.1016/j.jrmge.2024.04.004 |
| 英文摘要 | During the construction and operation of gas storage reservoirs, changes in the principal stress direction can induce fracture propagation under conditions of lower differential stress, potentially leading to failure in the surrounding rock. However, the weakening of strength due to pure stress rotation has not yet been investigated. Based on fracture mechanics, an enhanced Mohr-Coulomb strength criterion considering stress rotation is proposed and verified with experimental and numerical simulations. The micro-damage state and the evolution of the rock under the pure stress-rotation condition are analyzed. The findings indicate that differential stress exceeding the crack initiation stress is a prerequisite for stress rotation to promote the development of rock damage. As the differential stress increases, stress rotation is more likely to induce rock damage, leading to a transition from brittle to plastic failure, characterized by wider fractures and a more complex fracture network. Overall, a negative exponential relationship exists between the stress rotation angle required for rock failure and the differential stress. The feasibility of applying the enhanced criterion to practical engineering is discussed using monitoring data obtained from a mine-by tunnel. This study introduces new concepts for understanding the damage evolution of the surrounding rock under complex stress paths and offers a new theoretical basis for predicting the damage of gas storage reservoirs. (c) 2024 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/ by/4.0/). |
| 资助项目 | National Natural Science Foundation of China[42272321] ; National Natural Science Foundation of China[42162027] ; National Natural Science Foundation of China-Youth Fund[41902301] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001317126500001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42599]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Guibin |
| 作者单位 | 1.Chongqing Univ, Coll Resources & Environm Sci, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China 2.Guizhou Univ, Coll Resources & Environm Engn, Guiyang 50025, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Huandui,Wang, Guibin,Yang, Chunhe,et al. Rock strength weakening subject to principal stress rotation: Experimental and numerical investigations[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2024,16(9):3544-3557. |
| APA | Liu, Huandui,Wang, Guibin,Yang, Chunhe,Zhang, Junyue,&Chen, Shiwan.(2024).Rock strength weakening subject to principal stress rotation: Experimental and numerical investigations.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,16(9),3544-3557. |
| MLA | Liu, Huandui,et al."Rock strength weakening subject to principal stress rotation: Experimental and numerical investigations".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 16.9(2024):3544-3557. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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