Laboratory test and numerical simulations for 3D printed irregular columnar jointed rock masses under biaxial compression
文献类型：期刊论文
| 作者 | Zhao, Danchen5,6; Xia, Yingjie4,5,6; Zhang, Chuanqing3,4; Zhou, Hui3,4; Tang, Chun'an5,6; Liu, Ning2; Chen, Jun2; Wang, Peng2; Wang, Chenglong1 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 81期号:3页码:23 |
| 关键词 | Columnar jointed rock mass Acoustic emission Numerical calculations 3DP block model Mechanical properties |
| ISSN号 | 1435-9529 |
| DOI | 10.1007/s10064-022-02626-x |
| 英文摘要 | The columnar jointed rock mass (CJRM) has irregular structures, which significantly influence its mechanical properties and failure characteristics. Previously, it is difficult to produce CJRM specimens with the same structure for multiple repeated tests. Thus, in this study, the 3D printed (3DP) block models of CJRM with different inclination angles were reconstructed. In addition, the digital image processing (DIP) was applied to conduct 3D analysis of the failure processes. By carrying out laboratory tests and numerical calculations, the failure modes and mechanical properties of irregular CJRM under different biaxial compression conditions were determined. In laboratory tests, when the biaxial pressure was 0.5 MPa and the inclination angles were different, the 3DP block models of CJRM underwent tensile failure, tensile-shear failure, shear-slip failure, and disintegration failure along the axial joint surface, respectively. Meanwhile, according to the numerical simulations, the failure modes of the numerical model at biaxial pressures of 2 MPa and 5 MPa were similar to those of 0.5 MPa in general. Under different inclination angles, the mechanical parameters of the CJRMs were closely correlated with the biaxial pressure. The peak strength increased as the biaxial pressure increased, and the relationship curve between the peak strain and biaxial pressure was approximately U-shaped. In addition, the anisotropy coefficients (ACs) of the mechanical parameters constantly decreased and approached stability as the biaxial pressure increased. The numerical models and 3DP block models were consistent in terms of the failure modes, acoustic emission (AE), and mechanical properties. |
| 资助项目 | National Natural Science Foundation of China[42077251] ; National Natural Science Foundation of China[41807269] ; National Natural Science Foundation of China[U1865203] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[Z020011] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000761506700001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34504]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Xia, Yingjie |
| 作者单位 | 1.Liaoyang Petrochem Fiber Co, Liaoyang 111003, Peoples R China 2.Power China Huadong Engn Corp, Hangzhou 310014, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 5.Dalian Univ Technol, Sch Civil Engn, Dalian 116024, Peoples R China 6.Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Danchen,Xia, Yingjie,Zhang, Chuanqing,et al. Laboratory test and numerical simulations for 3D printed irregular columnar jointed rock masses under biaxial compression[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2022,81(3):23. |
| APA | Zhao, Danchen.,Xia, Yingjie.,Zhang, Chuanqing.,Zhou, Hui.,Tang, Chun'an.,...&Wang, Chenglong.(2022).Laboratory test and numerical simulations for 3D printed irregular columnar jointed rock masses under biaxial compression.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,81(3),23. |
| MLA | Zhao, Danchen,et al."Laboratory test and numerical simulations for 3D printed irregular columnar jointed rock masses under biaxial compression".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 81.3(2022):23. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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