Anisotropic characteristics of acoustic emission and the corresponding multifractal spectrum during progressive failure of shale under cyclic loading
文献类型：期刊论文
| 作者 | Xie, Yachen1,3; Hou, Michael Z.1; Li, Cunbao1,2 |
| 刊名 | INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
 |
| 出版日期 | 2023-05-01 |
| 卷号 | 165期号:-页码:- |
| 关键词 | Acoustic emission Anisotropy Cyclic loading and unloading Failure mechanism Multifractal |
| ISSN号 | 1365-1609 |
| 英文摘要 | The failure mechanism of shale under cyclic loading is useful for understanding fatigue hydraulic fracturing in reservoirs. The anisotropic characteristics of this mechanism were investigated in this study by conducting acoustic emission (AE) monitoring tests on shale specimens with seven different bedding inclination angles (O) under uniaxial cyclic loading and unloading. The results showed that during the cyclic loading path, except for shale specimens with bedding inclination angles of 0 degrees and 45 degrees, the cumulative number of AE events and cu-mulative AE energy at each loading level tend to decrease and then increase during failure process; the Felicity ratio decreases overall with increasing the cycle numbers. Different trends in the number of AE events and the cumulative AE energy induced by tensile or shear fracture with increasing O were observed. The bedding plane was found to not only affect the shale fracture mechanism but to also significantly impact the magnitude of the fracture energy release rate for the same fracture mechanism. The b value and spatial evolution of AE revealed the evolution of fractures in shale. Both tensile and shear AE events under cyclic loading and unloading were mostly generated by micro-and medium-scale fractures, regardless of O. The AE time series parameters of anisotropic shale exhibited multifractal characteristics. The multifractal spectrum width Delta alpha effectively reflected the nonuniformity of the AE energy parameters for failure in specimens with different O. The difference in the fractal dimension Delta f in specimens with increasing O was found to effectively characterize the occurrence probability of large-energy AE events. |
| 学科主题 | Engineering ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000950280900001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35054]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Institute of Subsurface Energy Systems, Clausthal University of Technology, Clausthal-Zellerfeld, 38678, Germany 2.Shenzhen Key Laboratory of Deep Engineering Sciences and Green Energy, Shenzhen University, Shenzhen, 518060, China 3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Science, Wuhan, 430071, China |
| 推荐引用方式 GB/T 7714 | Xie, Yachen,Hou, Michael Z.,Li, Cunbao. Anisotropic characteristics of acoustic emission and the corresponding multifractal spectrum during progressive failure of shale under cyclic loading[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2023,165(-):-. |
| APA | Xie, Yachen,Hou, Michael Z.,&Li, Cunbao.(2023).Anisotropic characteristics of acoustic emission and the corresponding multifractal spectrum during progressive failure of shale under cyclic loading.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,165(-),-. |
| MLA | Xie, Yachen,et al."Anisotropic characteristics of acoustic emission and the corresponding multifractal spectrum during progressive failure of shale under cyclic loading".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 165.-(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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