A New Method to Investigate the Size Effect and Anisotropy of Mechanical Properties of Columnar Jointed Rock Mass
文献类型：期刊论文
| 作者 | Zhao, Danchen2,3; Xia, Yingjie2,3,4; Zhang, Chuanqing4,5; Liu, Ning6; Tang, Chun'an2,3; Singh, Hemant Kumar1; Chen, Jun6; Wang, Peng6 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2022-12-25 |
| 卷号 | -期号:-页码:- |
| ISSN号 | 0723-2632 |
| 关键词 | Columnar jointed rock mass (CJRM) Representative volume element (RVE) Size effect Anisotropy Mechanical properties |
| 英文摘要 | As a special type of rock mass, the columnar jointed rock masses (CJRMs) present anisotropic mechanical properties and complicated failure modes due to the existence of columnar joints and micro-fractures. The determinations of mechanical properties and representative volume element (RVE) of CJRMs are important for the design, construction, and stability evalu-ation of hydropower projects. In this paper, the numerical simulations of CJRMs with different inclination angles and sizes under uniaxial and true triaxial compression conditions were conducted to investigate the size effect and anisotropic charac-teristics of mechanical properties. Results showed the failure modes presented anisotropic and size effect characteristics and the confining pressure influenced the failure modes by providing lateral enhancement. In addition, the mechanical properties first fluctuated and then reached stability as size increased, and the RVE were concentrated in 2 m to 3 m. The RVE were affected by the loading conditions and the CJRMs with inclination angles of 90 degrees and 75 degrees exhibited the smallest and largest RVE respectively. The anisotropy coefficients (ACs) of mechanical properties possessed a RVE of 2.5 m. Based on the simulations, a new method was proposed to investigate the correlation between the size effect and anisotropy of mechanical properties. Results showed the mechanical properties of CJRMs presented most stably at the inclination angle of 90 degrees, and the inclination angles ranging from 40 degrees to 75 degrees were the most unfavorable. Based on this method, the anisotropy of size effect and the size effect of anisotropy, which were difficult to investigate in the past, could be discussed in detail through numerical simulations. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER WIEN |
| WOS记录号 | WOS:000902023200001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35354]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Department of Petroleum Engineering and Geoengineering, Rajiv Gandhi Institute of Petroleum Technology, Jais, Amethi 229304, U.P, India 2.State Key Laboratory of Coastal and Ofshore Engineering, Dalian University of Technology, Dalian 116024, China 3.School of Civil Engineering, Dalian University of Technology, Dalian 116024, China 4.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 5.University of Chinese Academy of Sciences, Beijing 100049, China 6.Power China Huadong Engineering Corporation, Hangzhou 310014, China |
| 推荐引用方式 GB/T 7714 | Zhao, Danchen,Xia, Yingjie,Zhang, Chuanqing,et al. A New Method to Investigate the Size Effect and Anisotropy of Mechanical Properties of Columnar Jointed Rock Mass[J]. ROCK MECHANICS AND ROCK ENGINEERING,2022,-(-):-. |
| APA | Zhao, Danchen.,Xia, Yingjie.,Zhang, Chuanqing.,Liu, Ning.,Tang, Chun'an.,...&Wang, Peng.(2022).A New Method to Investigate the Size Effect and Anisotropy of Mechanical Properties of Columnar Jointed Rock Mass.ROCK MECHANICS AND ROCK ENGINEERING,-(-),-. |
| MLA | Zhao, Danchen,et al."A New Method to Investigate the Size Effect and Anisotropy of Mechanical Properties of Columnar Jointed Rock Mass".ROCK MECHANICS AND ROCK ENGINEERING -.-(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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