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Rayleigh channel wave field and dispersion of coal seams with small faults
Qiao YongHu1,2; Teng JiWen2,3; Pi JiaoLong2
2018-12-01
发表期刊CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
卷号61期号:12页码:4976-4987
摘要Whether concealed small faults in coal seams can be found out during geological exploration is a main geological factor that affects the safety production of a coal mine. Seam Channel waves in coal seams are very suitable for detecting abnormal structures in a coal field, because they are characterized by strong energy, obvious dispersion and easy to identify. In this paper, we use the spectral element method to simulate 2D Rayleigh channel wave propagation in coal seams containing small faults, and analyze the characteristics of wave fields, dispersion and spectra of direct, reflected and transmitted channel waves. Based on different fault models with small throws (vertical offsets 1/4, 1/2, 3/4, one thickness of a coal seam; dips 90 degrees, 60 degrees, and 45 degrees), we address the influential effects of small faults on these waves. By virtue of the analysis above, we obtain some new insights into Rayleigh channel wave in coal seams with small faults, and discuss the application of such waves in exploration.
关键词Rayleigh channel wave Spectral element method Numerical simulation Dispersion analysis Small-throw fault
DOI10.6038/cjg2018J0590
关键词[WOS]MODE ; SH
语种英语
WOS研究方向Geochemistry & Geophysics
WOS类目Geochemistry & Geophysics
WOS记录号WOS:000454466600022
出版者SCIENCE PRESS
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/90256
专题岩石圈演化国家重点实验室
通讯作者Qiao YongHu
作者单位1.Shanxi Normal Univ, Linfen 041000, Shanxi, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Jilin Univ, Changchun 130026, Jilin, Peoples R China
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Qiao YongHu,Teng JiWen,Pi JiaoLong. Rayleigh channel wave field and dispersion of coal seams with small faults[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(12):4976-4987.
APA Qiao YongHu,Teng JiWen,&Pi JiaoLong.(2018).Rayleigh channel wave field and dispersion of coal seams with small faults.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(12),4976-4987.
MLA Qiao YongHu,et al."Rayleigh channel wave field and dispersion of coal seams with small faults".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.12(2018):4976-4987.
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