Effect of Mineral Composition and Particle Size on the Failure Characteristics and Mechanisms of Marble in the China Jinping Underground Laboratory
文献类型：期刊论文
| 作者 | Xu, Hong1,2; Jing, Peiqi1,2; Feng, Guangliang3; Zhang, Zhen1,2; Jiang, Quan3; Yan, Jie1,2 |
| 刊名 | MATERIALS
 |
| 出版日期 | 2024-05-01 |
| 卷号 | 17期号:10页码:19 |
| 关键词 | grain size mineral composition true triaxial test mechanical properties failure mechanism |
| DOI | 10.3390/ma17102290 |
| 英文摘要 | In deep underground engineering, the deformation, failure characteristics, and mechanism of surrounding rock under the influence of grain sizes and mineral compositions are not clear. Based on CJPL-II variously colored marbles, the differences in grain size and mineral composition of the marble were analyzed by thin-section analysis and XRD tests, and the effect of intermediate principal stress on the mechanical properties of marble was investigated. Both SEM and microfracture analysis were coupled to reveal the failure mechanisms. The results highlight that the crack initiation strength, damage strength, peak strength, and elasticity modulus of Jinping marble exhibit an increasing trend with an increase in intermediate principal stress, while the peak strain initially increases and subsequently decreases. Moreover, this study established negative correlations between marble strength, brittleness characteristics, and fracture angle with grain size, whereas positive correlations were identified with the content of quartz, sodium feldspar, and the magnitude of the intermediate principal stress. The microcrack density in marble was found to increase with larger grain sizes and decrease with elevated quartz and sodium feldspar content, as well as with increasing intermediate principal stress. Notably, as the intermediate principal stress intensifies and grain size diminishes, the transgranular tensile failure of marble becomes more conspicuous. These research findings contribute to the effective implementation of disaster prevention and control strategies. |
| 资助项目 | National Natural Science Foundation of China ; Key Laboratory of Ministry of Education on the Safe Mining of Deep Metal Mines, Northeastern University |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001231460300001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41381]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Feng, Guangliang |
| 作者单位 | 1.Changsha Univ Sci & Technol, Natl Engn Res Ctr Highway Maintenance Technol, Changsha 410114, Peoples R China 2.Changsha Univ Sci & Technol, Sch Civil Engn, Changsha 410114, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Hong,Jing, Peiqi,Feng, Guangliang,et al. Effect of Mineral Composition and Particle Size on the Failure Characteristics and Mechanisms of Marble in the China Jinping Underground Laboratory[J]. MATERIALS,2024,17(10):19. |
| APA | Xu, Hong,Jing, Peiqi,Feng, Guangliang,Zhang, Zhen,Jiang, Quan,&Yan, Jie.(2024).Effect of Mineral Composition and Particle Size on the Failure Characteristics and Mechanisms of Marble in the China Jinping Underground Laboratory.MATERIALS,17(10),19. |
| MLA | Xu, Hong,et al."Effect of Mineral Composition and Particle Size on the Failure Characteristics and Mechanisms of Marble in the China Jinping Underground Laboratory".MATERIALS 17.10(2024):19. |
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。