Strength, deformation, and failure characteristics of hollow cylinder sandstone under axial-torsional tests
文献类型：期刊论文
| 作者 | Jiang, Yue1,4; Zhou, Hui1,2; Lu, Jingjing1,2; Gao, Yang1,2; Li, Zhen3 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2023-08-01 |
| 卷号 | 82期号:8页码:- |
| ISSN号 | 1435-9529 |
| 关键词 | Axial-torsional test Hollow cylinder sandstone Principal stress axis rotation Rock strength Deformation characteristics Crack propagation |
| 英文摘要 | Due to the excavation disturbance in deep tunnel, the stress magnitude and orientation changed obviously, which affects the mechanical properties of surrounding rock and the stability of tunnel. The axial-torsional test is adopted to study the influence of stress orientation on the strength and deformation behavior of four sandstones, using the self-developed hollow cylinder torsional apparatus for rock. The results show that the peak shear strength of sandstone is nonlinear, positively correlated with axial stress, and negatively correlated with the rotation angle of the principal stress axis. The stress-strain curve obtained under the rotation of principal stress axis can be divided into compaction, elasticity, yield, and softening stages. Furthermore, the sensitivity of the crack damage threshold of various sandstone is analyzed. The results show that the rotation of the principal stress axis can aggravate rock damage, and the greater the initial damage degree, the stronger the impact. Finally, the evolution mechanism of the internal rock cracks under the axial-torsional test is discussed by analyzing the rock failure characteristics, and it can be seen that the initiation, propagation, and coalescence of cracks are not only affected by stress magnitude, but also the stress orientation. Moreover, the crack propagation model considering principal stress axis rotation is verified and improved experimentally. The results of this research are of great significance to studying the influence of stress orientation and provide an important method to investigate the mechanical properties of rock with complex stress states comprehensively. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:001022904400003 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35423]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, Hubei, China 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.Henan Polytechnic University, Jiaozuo 454000, Henan, China 4.Suzhou University of Science and Technology, Suzhou 215000, Jiangsu, China |
| 推荐引用方式 GB/T 7714 | Jiang, Yue,Zhou, Hui,Lu, Jingjing,et al. Strength, deformation, and failure characteristics of hollow cylinder sandstone under axial-torsional tests[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2023,82(8):-. |
| APA | Jiang, Yue,Zhou, Hui,Lu, Jingjing,Gao, Yang,&Li, Zhen.(2023).Strength, deformation, and failure characteristics of hollow cylinder sandstone under axial-torsional tests.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,82(8),-. |
| MLA | Jiang, Yue,et al."Strength, deformation, and failure characteristics of hollow cylinder sandstone under axial-torsional tests".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 82.8(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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