Anisotropic mechanical properties of quartz mica schist subjected to true triaxial compression
文献类型：期刊论文
| 作者 | Liu, Xufeng; Zhou, Yangyi; Xu, Dingping |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2023-05-01 |
| 卷号 | 82期号:9 |
| ISSN号 | 1866-6280 |
| 关键词 | Anisotropic mechanical property Schistosity structure True triaxial compression Deep-layered rock engineering |
| 英文摘要 | Asymmetrical large deformation problem of quartz mica schist is anticipated in a planning hydropower station. The objective of this study was to investigate the anisotropic mechanical properties of the schist under complex stress states. For this purpose, a series of true triaxial compression tests accompanied by acoustic emission monitoring were carried out on this schist with different loading angles with respect to inherent schistosity. The test results show that the orientation of schistosity and stress state have a significant impact on the deformation, strength and failure of this schist. More specifically, when the sigma(2) is parallel to the strike of the schistosity (omega = 0 degrees), the failure of the specimen is mainly controlled by the schistosity structure, and the strength is lower compared with the case of sigma(2) perpendicular to the strike (omega = 90 degrees). When omega = 90 degrees, the deformation normal to schistosity is more restrained, and the acoustic emission impact mostly presents the phenomenon of concentration and sudden increase during the fracture. The test results indicate that the normal stress constraint effect on the schistosity can effectively improve the strength and inhibit the shear or splitting failure along the schistosity, hence, the tunnel axis should be at a large angle with the strike of schistosity, and support measures should be applied on schistosity as soon as possible after excavation. |
| 学科主题 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000972074000007 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34879]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Northeastern University - China |
| 推荐引用方式 GB/T 7714 | Liu, Xufeng,Zhou, Yangyi,Xu, Dingping. Anisotropic mechanical properties of quartz mica schist subjected to true triaxial compression[J]. ENVIRONMENTAL EARTH SCIENCES,2023,82(9). |
| APA | Liu, Xufeng,Zhou, Yangyi,&Xu, Dingping.(2023).Anisotropic mechanical properties of quartz mica schist subjected to true triaxial compression.ENVIRONMENTAL EARTH SCIENCES,82(9). |
| MLA | Liu, Xufeng,et al."Anisotropic mechanical properties of quartz mica schist subjected to true triaxial compression".ENVIRONMENTAL EARTH SCIENCES 82.9(2023). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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