A novel indirect optical method for rock stress measurement using micro- deformation fi eld analysis
文献类型：期刊论文
| 作者 | Feng, Yujie1,2; Pan, Peng-Zhi1,2; Wang, Zhaofeng1,2; Liu, Xufeng1,2; Miao, Shuting1,2 |
| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 16期号:9页码:3616-3628 |
| 关键词 | Rock stress measurement Optical technology Digital image correlation (DIC) technology Micro-deformation field |
| ISSN号 | 1674-7755 |
| DOI | 10.1016/j.jrmge.2023.10.011 |
| 英文摘要 | Stress measurement plays a crucial role in geomechanics and rock engineering, especially for the design and construction of large-scale rock projects. This paper presents a novel method, based on the traditional stress relief approach, for indirectly measuring rock stress using optical techniques. The proposed method allows for the acquisition of full-field strain evolution on the borehole's inner wall before and after disturbance, facilitating the determination of three-dimensional (3D) stress information at multiple points within a single borehole. The study focuses on presenting the method's theoretical framework, laboratory validation results, and equipment design conception. The theoretical framework comprises three key components: the optical imaging method of the borehole wall, the digital image correlation (DIC) method, and the stress calculation procedure. Laboratory validation tests investigate strain field distribution on the borehole wall under varying stress conditions, with stress results derived from DIC strain data. Remarkably, the optical method demonstrates better measurement accuracy during the unloading stage compared to conventional strain gauge methods. At relatively high stress levels, the optical method demonstrates a relative error of less than 7% and an absolute error within 0.5 MPa. Furthermore, a comparative analysis between the optical method and the conventional contact resistance strain gauge method highlights the optical method's enhanced accuracy and stability, particularly during the unloading stage. The proposed optical stress measurement device represents a pioneering effort in the application of DIC technology to rock engineering, highlighting its potential to advance stress measurement techniques in the field. (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-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/). |
| 资助项目 | National Natural Science Foundation of China[52125903] ; National Natural Science Foundation of China[52209149] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001320787200001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42673]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Pan, Peng-Zhi; Wang, Zhaofeng |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Yujie,Pan, Peng-Zhi,Wang, Zhaofeng,et al. A novel indirect optical method for rock stress measurement using micro- deformation fi eld analysis[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2024,16(9):3616-3628. |
| APA | Feng, Yujie,Pan, Peng-Zhi,Wang, Zhaofeng,Liu, Xufeng,&Miao, Shuting.(2024).A novel indirect optical method for rock stress measurement using micro- deformation fi eld analysis.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,16(9),3616-3628. |
| MLA | Feng, Yujie,et al."A novel indirect optical method for rock stress measurement using micro- deformation fi eld analysis".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 16.9(2024):3616-3628. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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