Preliminary study on the numerical-physical simulation of seismic channel waves

doi:10.6038/cjg2018K0529

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Preliminary study on the numerical-physical simulation of seismic channel waves
	Pi JiaoLong 1,2; Teng JiWen 2; Liu YouShan 2
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2018-06-01
卷号	61 期号:6 页码:2481-2493
关键词	Rayleigh channel wave Love channel wave Staggered-grid finite difference method Numerical simulation Physical simulation
ISSN号	0001-5733
DOI	10.6038/cjg2018K0529
英文摘要	In view of the propagation characteristics of seismic channel waves in the low-velocity layer, we make a preliminary study on the numerical simulation and physical simulation of these waves. In the aspect of numerical simulation, this paper adopts the staggered-grid finite difference method to conduct a 3-D seismic wavefield forward modeling of the channel waves in the coal seam. Based on the wave field snapshots and synthetic seismic records, the wave field characteristics of different models and the propagation laws of various waves are studied. In the physical simulation, this paper adopts the different proportions of the epoxy resin and the silicone rubber material to build a physical model. The clear channel waves are recorded by the transmission and reflection observation system. The results show that in the seismic wave field excited by the explosive source in the coal seam, the energy of Love channel waves are less than those of SV component of Rayleigh channel waves and greater than those of SH component of Rayleigh channel waves in the coal seam. With respect to the SH component of Rayleigh channel waves and Love channel waves, Rayleigh channel waves leakage energy in the surrounding rock is relatively strong. The seismic waves in surrounding rock near the coal seam still propagate as channel waves. With the decreasing thickness of the coal seam, the channel waves are shifting toward dominant frequency, with stronger dispersion, and larger wave speed.
WOS关键词	TRANSVERSELY ISOTROPIC MEDIA ; SEAM
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000435427300027
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88182]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Teng JiWen
作者单位	1.China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Pi JiaoLong,Teng JiWen,Liu YouShan. Preliminary study on the numerical-physical simulation of seismic channel waves[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(6):2481-2493.
APA	Pi JiaoLong,Teng JiWen,&Liu YouShan.(2018).Preliminary study on the numerical-physical simulation of seismic channel waves.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(6),2481-2493.
MLA	Pi JiaoLong,et al."Preliminary study on the numerical-physical simulation of seismic channel waves".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.6(2018):2481-2493.