Shear Failure Mechanisms of Sandstone Subjected to Direct, True Triaxial and Confining Shear Test Conditions
文献类型：期刊论文
| 作者 | Zhao, Jun; Hu, Liang; Feng, Xiating ; Xiao, Yaxun; Guo, Yue
|
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2023-06-12 |
| ISSN号 | 0723-2632 |
| 关键词 | Shear test Lateral stress Shear failure mechanism Acoustic emission characteristics |
| 英文摘要 | The shear mechanical properties are the important factors affecting the failure of rock mass. At present, tests measuring the shear mechanical behavior characteristics of rocks under three-dimensional stress are rare. In particular, the influence of lateral stress on the shear failure mechanism of rock is less often considered. The true triaxial test device was used to conduct direct shear, true triaxial stress shear, and confining shear tests under three-dimensional states of stress. Through the three different types of shear tests, the deformation, failure modes, strength, and surface roughness of sandstone were investigated. Focusing on the acoustic emission (AE) characteristics during the failure of sandstone specimens, the influences of lateral stress on the shear failure mechanism of sandstone under true triaxial stress were studied. The test results show that lateral stress can increase the peak strength and residual strength of sandstone, significantly affecting its lateral deformation. Under high normal stress, the weaker the lateral restraint on the rock, the more severe the lateral deformation failure. The analysis found that lateral stress increased the compressive compactness of the mineral particles inside the sandstone and the occlusal hinge strength of the particles. It also restricts the lateral deformation of the sandstone and the germination of the number of internal cracks. Crack propagation is also accelerated under the combined action of high normal stress and lateral stress. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER WIEN |
| WOS记录号 | WOS:001004822400002 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34740]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Northeastern University - China; Northeastern University - China; 2.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS |
| 推荐引用方式 GB/T 7714 | Zhao, Jun,Hu, Liang,Feng, Xiating,et al. Shear Failure Mechanisms of Sandstone Subjected to Direct, True Triaxial and Confining Shear Test Conditions[J]. ROCK MECHANICS AND ROCK ENGINEERING,2023. |
| APA | Zhao, Jun,Hu, Liang,Feng, Xiating,Xiao, Yaxun,&Guo, Yue.(2023).Shear Failure Mechanisms of Sandstone Subjected to Direct, True Triaxial and Confining Shear Test Conditions.ROCK MECHANICS AND ROCK ENGINEERING. |
| MLA | Zhao, Jun,et al."Shear Failure Mechanisms of Sandstone Subjected to Direct, True Triaxial and Confining Shear Test Conditions".ROCK MECHANICS AND ROCK ENGINEERING (2023). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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