Effects of natural stiff discontinuities on the deformation and failure mechanisms of deep hard rock under true triaxial conditions
文献类型：期刊论文
| 作者 | Xu, Hong3,4; Zhang, Zhen3,4; Zhang, Yong-Jie3,4; Jiang, Quan1; Qiu, Shi-Li1; Zhou, Yang-Yi2; Feng, Guang-Liang1 |
| 刊名 | ENGINEERING FAILURE ANALYSIS
 |
| 出版日期 | 2024-04-01 |
| 卷号 | 158页码:20 |
| 关键词 | True triaxial test Natural stiff discontinuity Inclination angle Deformation and failure characteristics Failure mechanism |
| ISSN号 | 1350-6307 |
| DOI | 10.1016/j.engfailanal.2024.108034 |
| 英文摘要 | Stiff discontinuities have a significant influence on deep hard rock engineering disasters. To study the influence of these discontinuities on the deformation and failure mechanisms of deep hard rock during excavation, true triaxial tests are carried out on marble samples with natural stiff discontinuities; samples with different discontinuity inclination angles and thicknesses are tested under different true triaxial stress conditions. The experimental results show that the post-peak deformation and failure characteristics of a sample are significantly influenced by the inclination angle, thickness, and stress state of the stiff discontinuity. Under the conditions of a relatively high minimum principal stress, small intermediate principal stress, thick stiff discontinuity, and inclination angle close to the failure angle of the intact sample at the same stress level, the propagation and penetration of microcracks inside the sample are mainly controlled by the stiff discontinuity, and the sample is more prone to sudden and violent tensile failure along the stiff discontinuity. Based on these experiments, a sudden and violent failure tendency index of deep hard rock with a stiff discontinuity (psi) is proposed to evaluate the impact of stiff discontinuities on surrounding rock failure in deep engineering, and the characteristics of psi under typical stress levels are summarized. This research can provide a reference for the prevention and control of sudden disasters caused by stiff discontinuities in deep engineering. |
| 资助项目 | National Natural Science Foundation of China[52208330] ; Natural Science Foundation of Hunan Province[2022JJ40500] ; Open Fund of Key Laboratory of Safety Control of Bridge Engi- neering, Ministry of Education (Changsha University of Science Technology)[21 KB13] ; Key Laboratory of Ministry of Education on the Safe Mining of Deep Metal Mines, Northeastern University, China |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001177128000001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40868]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Feng, Guang-Liang |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Northeastern Univ, Key Lab, Minist Educ Safe Min Deep Met Mines, Shenyang 110819, Peoples R China 3.Changsha Univ Sci & Technol, Key Lab Safety Control Bridge Engn, Minist Educ, Changsha 410114, Peoples R China 4.Changsha Univ Sci & Technol, Sch Civil Engn, Changsha 410114, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Hong,Zhang, Zhen,Zhang, Yong-Jie,et al. Effects of natural stiff discontinuities on the deformation and failure mechanisms of deep hard rock under true triaxial conditions[J]. ENGINEERING FAILURE ANALYSIS,2024,158:20. |
| APA | Xu, Hong.,Zhang, Zhen.,Zhang, Yong-Jie.,Jiang, Quan.,Qiu, Shi-Li.,...&Feng, Guang-Liang.(2024).Effects of natural stiff discontinuities on the deformation and failure mechanisms of deep hard rock under true triaxial conditions.ENGINEERING FAILURE ANALYSIS,158,20. |
| MLA | Xu, Hong,et al."Effects of natural stiff discontinuities on the deformation and failure mechanisms of deep hard rock under true triaxial conditions".ENGINEERING FAILURE ANALYSIS 158(2024):20. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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