Energy Evolution and Acoustic Emission Characteristics of Uniaxial Compression Failure of Anchored Layered Sandstone
文献类型：期刊论文
| 作者 | Yu, Yang3; Zhao, Da-Cheng3; Feng, Guang-Liang1,2; Geng, Da-Xin3; Guo, Hao-Sen3 |
| 刊名 | FRONTIERS IN EARTH SCIENCE
 |
| 出版日期 | 2022-02-09 |
| 卷号 | 10页码:15 |
| 关键词 | rock anchorage bedding sandstone energy evolution acoustic emission b value spatial fractal |
| DOI | 10.3389/feart.2022.841598 |
| 英文摘要 | To study the energy evolution and acoustic emission characteristics of layered sandstone under anchorage in the process of deformation and failure, the sandstone samples from Chuxiong Yi Autonomous Prefecture, Yunnan Province were selected for uniaxial compression testing. The energy evolution in the process of sandstone failure and the spatial fractal characteristics of acoustic emission events in the process of deformation and failure were investigated. Research results show that anchoring can make layered sandstone store more energy, the stored energy first increases, then decreases with the increase of bedding angle; the B value of sandstone under anchorage is generally higher than that of unanchored sandstone in the whole deformation and failure process, and the continuous decline in B value can be used to indicate a precursor to instability and failure; under the action of anchoring, the D value of sandstone (its fractal dimension) also increases, then decreases with the increase of bedding angle. The D value changes within [2, 3]. At a given bedding angle, the D value of anchored sandstone is greater than that of unanchored sandstone, the D value of 30 degrees anchored sandstone increased the most (by 12.33%); the maximum D value occurred in 45 degrees anchored sandstone (reaching 2.72) and the spatial distribution of acoustic emission events and damage of sandstone under anchorage is also more uniform; under increasing stress, the number of acoustic emission events is less widely distributed in the early stage and more densely distributed in the later stage. The growth rate of the D value varies across different peak stress ranges, which is more significant under the action of anchorage. The acoustic emission event counts grow evenly and slowly in the space, and the toughness of sandstone is improved to a certain extent under the action of anchorage. |
| 资助项目 | National Natural Science Foundation of China[42177156] ; National Natural Science Foundation of China[51969007] ; Fund of Jiangxi Department of Science and Technology[20202ACBL214016] ; Open Fund of Hubei Key Laboratory of Disaster Prevention and Mitigation (China Three Gorges University)[2020KJZ03] ; Science and Technology Project of Jiangxi Provincial Department of Transportation[2021Z0004] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000760732800001 |
| 出版者 | FRONTIERS MEDIA SA |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34653]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Feng, Guang-Liang |
| 作者单位 | 1.China Three Gorges Univ, Hubei Key Lab Disaster Prevent & Mitigat, Yichang, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China 3.East China Jiaotong Univ, Key Lab Geotech Engn Infrastruct & Safety Control, Nanchang, Jiangxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Yang,Zhao, Da-Cheng,Feng, Guang-Liang,et al. Energy Evolution and Acoustic Emission Characteristics of Uniaxial Compression Failure of Anchored Layered Sandstone[J]. FRONTIERS IN EARTH SCIENCE,2022,10:15. |
| APA | Yu, Yang,Zhao, Da-Cheng,Feng, Guang-Liang,Geng, Da-Xin,&Guo, Hao-Sen.(2022).Energy Evolution and Acoustic Emission Characteristics of Uniaxial Compression Failure of Anchored Layered Sandstone.FRONTIERS IN EARTH SCIENCE,10,15. |
| MLA | Yu, Yang,et al."Energy Evolution and Acoustic Emission Characteristics of Uniaxial Compression Failure of Anchored Layered Sandstone".FRONTIERS IN EARTH SCIENCE 10(2022):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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