IGGCAS OpenIR  > 岩石圈演化国家重点实验室
Rayleigh channel wave field and dispersion of coal seams with small faults
Qiao YongHu1,2; Teng JiWen2,3; Pi JiaoLong2
AbstractWhether 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.
KeywordRayleigh channel wave Spectral element method Numerical simulation Dispersion analysis Small-throw fault
WOS KeywordMODE ; SH
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000454466600022
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Document Type期刊论文
Corresponding AuthorQiao YongHu
Affiliation1.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
Recommended Citation
GB/T 7714
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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