Acoustic emission characteristics of rock salt under multi-stage cyclic loading
文献类型：期刊论文
| 作者 | Li, Hang1,2; Ma, Hongling3,4,5; Yang, Chunhe1,2,3,4; Zhao, Kai3,4; Hu, Zhiwen1,2; Daemen, J. J. K.6 |
| 刊名 | INTERNATIONAL JOURNAL OF FATIGUE
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 176页码:12 |
| 关键词 | Rock salt Cyclic loading Acoustic emission Crack type |
| ISSN号 | 0142-1123 |
| DOI | 10.1016/j.ijfatigue.2023.107911 |
| 英文摘要 | Rock salt is a common sedimentary rock found in the crust and is widely used for underground energy storage and waste disposal. This research conducted multi-stage cyclic loading on impure Huai'an rock salt while monitoring acoustic emissions (AE) in real-time. The results show that as the loading stress increases, the cumulative AE energy increases in a stepwise manner. The frequency distribution displays a band pattern of low, medium, and high frequencies. As the loading stress increases, the proportion of high-frequency signals decreases while that of low-frequency signals increases. The proportion of medium-frequency signals remains consistently the highest. The b-value initially decreases and then increases, with a sharp drop near the failure. Compared to the increased lower limit stress (ILLS), the constant lower limit stress (CLLS) causes higher cumulative AE energy and amplitude, and smaller b-values for the salt samples. These results indicate that the CLLS increases the size of cracks and damage in the salt samples. Based on the RA (risetime/ amplitude)-AF (average frequency) distribution, it is found that the primary mode of failure for rock salt under multi-stage cyclic loading is tensile cracking. Compared to the ILLS, the CLLS promotes the development of shear cracks. The AE test results of the rock salt provide an important basis for explaining the in-situ microseismic signals generated during the operation of salt cavern energy storage. |
| 资助项目 | National Science Foundation for Excellent Young Scholars[52122403] ; Major Research Development Program of Hubei province[2022BAA093] ; Major Research Development Program of Hubei province[2022BAD163] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC10020300] |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001074044500001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39509]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Ma, Hongling |
| 作者单位 | 1.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China 2.Chongqing Univ, Sch Resources & Safety Engn, Chongqing 400044, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, Hubei Key Lab Geoenvironm Engn, Wuhan 430071, Peoples R China 6.Univ Nevada, Mackay Sch Earth Sci & Engn, Reno, NV 89557 USA |
| 推荐引用方式 GB/T 7714 | Li, Hang,Ma, Hongling,Yang, Chunhe,et al. Acoustic emission characteristics of rock salt under multi-stage cyclic loading[J]. INTERNATIONAL JOURNAL OF FATIGUE,2023,176:12. |
| APA | Li, Hang,Ma, Hongling,Yang, Chunhe,Zhao, Kai,Hu, Zhiwen,&Daemen, J. J. K..(2023).Acoustic emission characteristics of rock salt under multi-stage cyclic loading.INTERNATIONAL JOURNAL OF FATIGUE,176,12. |
| MLA | Li, Hang,et al."Acoustic emission characteristics of rock salt under multi-stage cyclic loading".INTERNATIONAL JOURNAL OF FATIGUE 176(2023):12. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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