Precise prediction of the collapse column based on channel wave spectral disparity characteristics and velocity tomography imaging
文献类型：期刊论文
| 作者 | Wu, Yanhui2,3; Zhu, Guowei2,3; Wang, Wei1 |
| 刊名 | JOURNAL OF GEOPHYSICS AND ENGINEERING
 |
| 出版日期 | 2022-05-24 |
| 卷号 | 19期号:3页码:326-335 |
| 关键词 | collapse column channel waves spectral disparity Jeffrey divergence dispersion analysis |
| ISSN号 | 1742-2132 |
| DOI | 10.1093/jge/gxac019 |
| 通讯作者 | Wang, Wei(wang_wei@lreis.ac.cn) |
| 英文摘要 | Collapse columns are complex geological anomalies that present safety hazards in coal mines. In practice, the boundaries and internal features are difficult to finely characterize. In this study, we use the Jeffrey divergence to reveal the spectral disparity when the channel wave seismic ray path encounters a collapse column. We use the forward mode and applications for verification. We find that the centroid peak frequency shifts toward lower frequencies, the frequency band narrows and the rays through a collapse column cause attenuation of energy. When a seismic ray path encounters a large collapse column, no channel wave appears in the seismic record, the dispersion curve velocity is greater than the velocity of a normal coal seam, the centroid peak frequency drops and the frequency band shrinks. When a seismic ray passes through the boundary of a collapse column, the dispersion curve shows two parallel velocity phases. When a seismic ray path passes through a small collapse column, the decrease in the centroid frequency becomes the only identifying feature. The proposed channel wave spectral disparity characteristic and velocity tomography imaging method can effectively identify small collapse columns and improve the accuracy and precision of the location of collapse column boundaries, with a position deviation of less than 10 m. |
| WOS关键词 | FREQUENCY-SHIFT ; ATTENUATION TOMOGRAPHY ; DISPERSION-CURVES ; COAL SEAMS ; FIELD ; TIME |
| 资助项目 | project 'subject of National Key R&D Program of China[2018YFC0807800] ; NSFC[41641040] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000799962200004 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | project 'subject of National Key R&D Program of China ; NSFC |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/178124]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Wei |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 2.China Univ Min & Technol, State Key Lab Coal Resources & Safe Min, Beijing 100083, Peoples R China 3.China Univ Min & Technol, Sch Geosci & Surveying Engn, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Yanhui,Zhu, Guowei,Wang, Wei. Precise prediction of the collapse column based on channel wave spectral disparity characteristics and velocity tomography imaging[J]. JOURNAL OF GEOPHYSICS AND ENGINEERING,2022,19(3):326-335. |
| APA | Wu, Yanhui,Zhu, Guowei,&Wang, Wei.(2022).Precise prediction of the collapse column based on channel wave spectral disparity characteristics and velocity tomography imaging.JOURNAL OF GEOPHYSICS AND ENGINEERING,19(3),326-335. |
| MLA | Wu, Yanhui,et al."Precise prediction of the collapse column based on channel wave spectral disparity characteristics and velocity tomography imaging".JOURNAL OF GEOPHYSICS AND ENGINEERING 19.3(2022):326-335. |
入库方式： OAI收割
来源：地理科学与资源研究所
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