Shear testing on rock tunnel models under constant normal stress conditions
文献类型：期刊论文
| 作者 | Yang, Bing2,3; Jiang, Quan2; Feng, Xiating1 ; Xin, Jie2,3; Xu, Dingping2
|
| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 14期号:6页码:1722 |
| 关键词 | Circular tunnel model Compression-shear test Spalling Numerical simulation Fracture surface roughness |
| ISSN号 | 1674-7755 |
| 英文摘要 | Large shear deformation problems are frequently encountered in geotechnical engineering. To expose the shear failure mechanism of rock tunnels, compression-shear tests for rock models with circular tunnel were carried out, including single tunnel and adjacent double tunnels. The failure process is recorded by the external video and miniature cameras around the tunnel, accompanied by real-time acoustic emission monitoring. The experiments indicate that the shearing processes of rock tunnel can be divided into four steps: (i) cracks appeared around tunnels, (ii) shear cracks and spalling ejection developed, (iii) floor warping occurred, and (iv) shear cracks ran through the tunnel model. Besides, the roughness of the sheared fracture surface decreased with the increase in normal stress. Corresponding numerical simulation indicates that there are tensile stress concentrations and compressive stress concentrations around the tunnel during the shearing process, while the compressive stress concentration areas are under high risk of failure and the existence of adjacent tunnels will increase the degree of stress concentration. (C) 2022 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/). |
| 学科主题 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000891300600004 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35203]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, Northeastern University, Shenyang, 110819, China 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China 3.University of Chinese Academy of Sciences, Beijing, 100049, China |
| 推荐引用方式 GB/T 7714 | Yang, Bing,Jiang, Quan,Feng, Xiating,et al. Shear testing on rock tunnel models under constant normal stress conditions[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2022,14(6):1722. |
| APA | Yang, Bing,Jiang, Quan,Feng, Xiating,Xin, Jie,&Xu, Dingping.(2022).Shear testing on rock tunnel models under constant normal stress conditions.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,14(6),1722. |
| MLA | Yang, Bing,et al."Shear testing on rock tunnel models under constant normal stress conditions".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 14.6(2022):1722. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。