Scale effect of microstructure interaction in elastic wave propagation
文献类型：期刊论文
| 作者 | Wang ZhiYang2,3,4; Li YouMing1,3,4; Bai WenLei2,3,4 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2021-09-01 |
| 卷号 | 64期号:9页码:3257-3269 |
| 关键词 | Asymmetric seismology Elastic wave Scale effect Numerical modelling |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2021O0317 |
| 英文摘要 | Compared with conventional elastic wave equations, the independent free term in the asymmetric elastic wave equations contains the parameter of characteristic scale of media. The scale effect of seismic wave propagation caused by microporous interaction in media can be observed in synthetic seismograms when performing numerical modelling using asymmetric elastic wave equations. In this paper, starting from the strain energy density function, and combining the geometric equations and the equilibrium equations, we derive the asymmetric elastic wave equations and the corresponding asymmetric SH-wave equations based on the modified couple stress theory. Then, we perform numerical modelling on a coal-seam three-layer model. By setting receivers along the surface and midline of the coal-seam three-layer model, meanwhile, changing the parameter values of the characteristic scale of the media, we obtain synthetic seismograms, and analyze the influence of the scale effect caused by microporous interaction in the media on the seismograms. In the end, drawing the following conclusions and understandings : (1) Seismograms generated by the asymmetric elastic wave equations show obvious scale effects. (2) The influence of the multi-scale of the microporous interaction in the media on seismograms need to be considered. |
| WOS关键词 | GRADIENT ; REFLECTION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000693048100020 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102667]  |
| 专题 | 地质与地球物理研究所_中国科学院油气资源研究重点实验室 |
| 通讯作者 | Li YouMing |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China 2.Beijing Univ Chem Technol, Beijing 100029, Peoples R China 3.Joint Res Grp High Speed Rail Seismol, Beijing 100029, Peoples R China 4.Joint Res Grp Asymmetr Elast Wave Equat, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang ZhiYang,Li YouMing,Bai WenLei. Scale effect of microstructure interaction in elastic wave propagation[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2021,64(9):3257-3269. |
| APA | Wang ZhiYang,Li YouMing,&Bai WenLei.(2021).Scale effect of microstructure interaction in elastic wave propagation.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,64(9),3257-3269. |
| MLA | Wang ZhiYang,et al."Scale effect of microstructure interaction in elastic wave propagation".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 64.9(2021):3257-3269. |
入库方式： OAI收割
来源：地质与地球物理研究所
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