Fractal characteristics of acoustic emission of gas-bearing coal subjected to true triaxial loading
文献类型：期刊论文
| 作者 | Zhang, Ran5,6; Liu, Jie4,5,6 ; Sa, Zhanyou5,6; Wang, Zaiquan3; Lu, Shouqing5,6; Lv ZY(吕召阳)1,2
|
| 刊名 | MEASUREMENT
 |
| 出版日期 | 2021-02-01 |
| 卷号 | 169页码:13 |
| ISSN号 | 0263-2241 |
| 关键词 | True triaxial Gas-bearing coal Acoustic emission Correlation dimension Fractal characteristic |
| DOI | 10.1016/j.measurement.2020.108349 |
| 通讯作者 | Liu, Jie(liujie0805@qut.edu.cn) |
| 英文摘要 | As coal mining proceeds deeper, coal and rock are subjected to growing stresses and gas pressures. Consequently, coal and rock gas dynamic disasters pose more and more considerable threats and hazards which should be warned in advance. Coal and rock in the field is actually in the true triaxial stress state. Study on deformation characteristics and precursory information of coal and rock under this state is meaningful for disaster warning. In this paper, experiments on the deformation, failure and acoustic emission (AE) characteristics of gas-bearing coal under true triaxial loading conditions were carried out. Besides, the variation law and fractal characteristics of AE under different gas pressures and confining stresses were analyzed. Furthermore, the effects of gas pressure and confining stress on the deformation, failure and fractal characteristics of coal were discussed. The results show that the process of AE variation under true triaxial loading conditions can be divided into two stages, namely the slow growth stage and the accelerated growth stage. A higher gas pressure corresponds to a shorter duration of slow growth stage, while a higher confining stress corresponds to a longer duration of slow growth stage. AE time series has fractal characteristics, and the correlation dimension can characterize the damage degree of a loaded coal sample. The dynamic changes, i.e., fluctuation-increase-decrease, in correlation dimension can accurately reflect the damage evolution process of a coal sample. In addition, the gradual reduction of correlation dimension can be used as the precursor information of coal sample instability and damage. The research results boast instructive significance for preventing the occurrence of coal and rock gas dynamic disasters and for reducing casualties and property loss in coal mines. |
| 分类号 | 二类/Q1 |
| WOS关键词 | DEFORMATION ; ENERGY ; DIMENSION ; PRESSURE ; METHANE ; AE |
| 资助项目 | National Natural Science Foundation of China[51504140] ; National Natural Science Foundation of China[51574153] ; National Natural Science Foundation of China[51804176] ; National Natural Science Foundation of China[51974169] ; Natural Science Foundation of Shandong Province[ZR2018PEE001] ; Key R&D Plan in Shandong Province[2018GSF120012] ; China Postdoctoral Science Foundation[2018M642632] ; China Postdoctoral Science Foundation[2019M652346] ; Project of Shandong Province Higher Educational Science and Technology Program[J18KA187] ; Open Found of the Laboratory of Mining Disaster Prevention and Control[MDPC201903] |
| WOS研究方向 | Engineering ; Instruments & Instrumentation |
| 语种 | 英语 |
| WOS记录号 | WOS:000600431500005 |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of Shandong Province ; Key R&D Plan in Shandong Province ; China Postdoctoral Science Foundation ; Project of Shandong Province Higher Educational Science and Technology Program ; Open Found of the Laboratory of Mining Disaster Prevention and Control |
| 其他责任者 | Liu, Jie |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/85894]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 3.Qingdao Univ Technol, Sch Sci, Qingdao 266520, Shandong, Peoples R China; 4.West Virginia Univ, Dept Min Engn, Morgantown, WV 26506 USA; 5.Shandong Key Ind Field Accid Prevent Technol Res, Qingdao 266520, Shandong, Peoples R China; 6.Qingdao Univ Technol, Dept Safety Engn, Qingdao 266520, Shandong, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zhang, Ran,Liu, Jie,Sa, Zhanyou,et al. Fractal characteristics of acoustic emission of gas-bearing coal subjected to true triaxial loading[J]. MEASUREMENT,2021,169:13. |
| APA | Zhang, Ran,Liu, Jie,Sa, Zhanyou,Wang, Zaiquan,Lu, Shouqing,&吕召阳.(2021).Fractal characteristics of acoustic emission of gas-bearing coal subjected to true triaxial loading.MEASUREMENT,169,13. |
| MLA | Zhang, Ran,et al."Fractal characteristics of acoustic emission of gas-bearing coal subjected to true triaxial loading".MEASUREMENT 169(2021):13. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。