Dynamic Mechanical Behaviors of Rock's Joints Quantified by Repeated Impact Loading Experiments with Digital Imagery
文献类型：期刊论文
| 作者 | Zou, Junpeng1; Hu, Xiaoyue1; Jiao, Yu-Yong1; Chen, Weizhong3; Wang, Jinchao3; Shen, Luyi Wesley1; Tang, Zhicheng1; Gong, Siyuan2 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2022-11-01 |
| 卷号 | 55期号:11页码:7035 |
| ISSN号 | 0723-2632 |
| 关键词 | Rock mass joint Repeated impact load Dynamic loading Joint roughness coefficient Digital rock imaging |
| 英文摘要 | Joints widely exist in engineering rock masses and significantly affect their dynamic response to different loadings. Here, utilizing the state-of-the-art 3D laser scanning technology, which allows the digitalization of the joint surface's topography, and the Digital Image Correlation scanning technology that records the time series of the strain and mass point vibration, we build our unique experimental apparatus on the basis of a conventional split Hopkinson pressure bar with which we perform a series of repeated experiments on samples that are intact, with rough and smooth joint surfaces. This series of experiments provide us opportunities to look into the joint's dynamic mechanical behavior and energy evolution through multiple repeated impact loadings. We observe that the transmitted coefficient decreases with a larger joint roughness coefficient and the number of impacts. The stress wave and energy attenuation of rock masses with rough joints are much greater than those with smooth joints. Further, we observe the rough joints are more damaged than the smooth joints. The quantitative analysis carried through this experiment allows us to describe the process of a stress wave propagating through a joint in the rock mass with three consecutive stages: (1) joint closure; (2) joint compaction; and (3) coordinating deformation. The stress wave and energy attenuation of rock masses caused by the joint occur mainly at the stages 1 and 2. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER WIEN |
| WOS记录号 | WOS:000836416500001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35149]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Faculty of Engineering, China University of Geosciences, Wuhan 430074, Hubei, China 2.School of Mines, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China 3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, Hubei, China |
| 推荐引用方式 GB/T 7714 | Zou, Junpeng,Hu, Xiaoyue,Jiao, Yu-Yong,et al. Dynamic Mechanical Behaviors of Rock's Joints Quantified by Repeated Impact Loading Experiments with Digital Imagery[J]. ROCK MECHANICS AND ROCK ENGINEERING,2022,55(11):7035. |
| APA | Zou, Junpeng.,Hu, Xiaoyue.,Jiao, Yu-Yong.,Chen, Weizhong.,Wang, Jinchao.,...&Gong, Siyuan.(2022).Dynamic Mechanical Behaviors of Rock's Joints Quantified by Repeated Impact Loading Experiments with Digital Imagery.ROCK MECHANICS AND ROCK ENGINEERING,55(11),7035. |
| MLA | Zou, Junpeng,et al."Dynamic Mechanical Behaviors of Rock's Joints Quantified by Repeated Impact Loading Experiments with Digital Imagery".ROCK MECHANICS AND ROCK ENGINEERING 55.11(2022):7035. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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