Research on mechanical properties and acoustic emission characteristics of rock beams with different lithologies and thicknesses
文献类型：期刊论文
| 作者 | Zhao, Tong-bin4,5,6; Zhang, Peng-fei4,5,6; Guo, Wei-yao4,5,6; Xiao, Ya-xun3; Zhao, Yong-qiang2; Sun, Xiang1 |
| 刊名 | LATIN AMERICAN JOURNAL OF SOLIDS AND STRUCTURES
 |
| 出版日期 | 2021 |
| 卷号 | 18期号:8页码:16 |
| 关键词 | Rock beam fracture three-point bending test acoustic emission AE energy crack mode |
| ISSN号 | 1679-7825 |
| DOI | 10.1590/1679-78256711 |
| 英文摘要 | The lithology and thickness of the rock beam affect its mechanical properties and acoustic emission characteristics when it is fractured. In this study, three-point bending tests of rock beams were carried out. Then, we proposed to utilize the percentage of peak energy to characterize the intensity of energy release during fracture. Finally, the energy release mechanism of coal roof fracture was discussed. The evolution process of acoustic emission includes five stages. The acoustic emission amplitude distribution of rock beams has three typical patterns. Most of the cracks after fracture are tensile cracks, the proportion of tensile cracks is positively correlated with the elastic modulus. The percentage of peak energy is positively correlated with thickness and elastic modulus. More energy is released when thick and hard roof fractures. When necessary, measures such as reducing the thickness or the strength of the roof could be taken to improve the safety of mining. |
| 资助项目 | Major Scientific and Technological Innovation Project of Shandong Provincial Key Research Development Program[2019SDZY02] ; Major Program of Shandong Provincial Natural Science Foundation[ZR2019ZD13] ; National Natural Science Foundation of China[51904165] ; State Key Laboratory of Water Resource Protection and Utilization in Coal Mining[SHGF-16-25] ; Climbling Project of Taishan Scholar in Shandong Province[tspd20210313] |
| WOS研究方向 | Engineering ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000796542700001 |
| 出版者 | LATIN AMER J SOLIDS STRUCTURES |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/36664]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Guo, Wei-yao |
| 作者单位 | 1.Shandong Energy Grp Co Ltd, Jinan 250014, Peoples R China 2.State Key Lab Water Resource Protect & Utilizat C, Beijing 102209, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Shandong Univ Sci & Technol, Minist Sci & Technol, Qingdao 266590, Peoples R China 5.Shandong Univ Sci & Technol, State Key Lab Min Disaster Prevent & Control Cofo, Qingdao 266590, Peoples R China 6.Shandong Univ Sci & Technol, Coll Energy & Min Engn, Qingdao 266590, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Tong-bin,Zhang, Peng-fei,Guo, Wei-yao,et al. Research on mechanical properties and acoustic emission characteristics of rock beams with different lithologies and thicknesses[J]. LATIN AMERICAN JOURNAL OF SOLIDS AND STRUCTURES,2021,18(8):16. |
| APA | Zhao, Tong-bin,Zhang, Peng-fei,Guo, Wei-yao,Xiao, Ya-xun,Zhao, Yong-qiang,&Sun, Xiang.(2021).Research on mechanical properties and acoustic emission characteristics of rock beams with different lithologies and thicknesses.LATIN AMERICAN JOURNAL OF SOLIDS AND STRUCTURES,18(8),16. |
| MLA | Zhao, Tong-bin,et al."Research on mechanical properties and acoustic emission characteristics of rock beams with different lithologies and thicknesses".LATIN AMERICAN JOURNAL OF SOLIDS AND STRUCTURES 18.8(2021):16. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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