Dispersive Curve Extraction of Rayleigh Wave in Coal Mine based on F-K Transform
详细信息
- 责任者：Wang Ji (Xi’an Research Institute ; China Coal Technology and Engineering Group Corp ; Xi’an 710077 ; China )
- 刊名：Coal Geology & Exploration
- 出版年：2012
- 卷期：40(2)
- 关键词：瑞雷波法 ; Rayleigh wave methods ; 井中物探 ; well geophysical exploration ; 波频散 ; wave dispersion
- 页码：p.75-77
- 图表：1 illus., 7 refs.
- 分类号：1600
- issnNo：ISSN1001-1986
- isbnNo：CN61-1155/P
摘要
Rayleigh wave exploration is one of the main methods of seismic exploration in underground coal mines. However, the traditional way of dispersion curves extraction is the spectral analysis surface wave method based on the correlation of traces. This method can only extract the basic mode of Rayleigh wave. For the purpose of getting multimode dispersion curves and extending the range of exploration, the authors improved the F-K transform based dispersive curve generation method and applied it on actual seismic data in underground coal mine. After verification by synthetic data, the authors used the method in the detection of structure in working face and acquired the multimode dispersion curves. This work confirmed the existence of multimode Ravleioh wave when faults exist in coal seam.