Tomography with sparseness regularisation for ultrasonic velocity imaging
文献类型：期刊论文
| 作者 | Zhu, Wei1; Wang, Shangxu1; Chang, Xu2; Zhai, Hongyu3; He, Taiming3; Wu, Hezhen3 |
| 刊名 | JOURNAL OF GEOPHYSICS AND ENGINEERING
 |
| 出版日期 | 2022-03-04 |
| 卷号 | 19期号:1页码:85-105 |
| 关键词 | ultrasonic velocity tomography sparseness regularisation fracturing process fracture morphology |
| ISSN号 | 1742-2132 |
| DOI | 10.1093/jge/gxac001 |
| 英文摘要 | Ultrasonic tomography, which is widely used in the study of the fracturing process of rocks, often exhibits low resolution due to insufficient ray coverage, particularly while evaluating the three-dimensional (3D) fractures. To resolve this issue, we adopted sparseness regularisation in tomography to reconstruct the ultrasonic velocity of rocks. Both numerical and laboratory experiments demonstrate that tomography with sparseness regularisation generates velocity images with clear fracture morphology than that with Tikhonov regularisation. Dynamic monitoring of the fracturing process of a granite slab with two-dimensional (2D) velocity images can reveal the accurate development of the fracturing process. The experiment on the internal structure of tight sandstone after hydraulic fracturing reveals demarcated low-velocity regions in the 3D ultrasonic velocity images of tomography with sparseness regularisation. These low-velocity regions correspond to the positions of the fractures when compared to the X-ray scanning images. Thus, tomography with sparseness regularisation can improve the resolution of ultrasonic velocity images, which can be used to accurately describe the fracture development and strain localisation during rock deformation. |
| WOS关键词 | TRAVEL-TIME TOMOGRAPHY ; ACOUSTIC-EMISSION ; INVERSION ; LAC |
| 资助项目 | National Natural Science Foundation of China[41974156] ; National Natural Science Foundation of China[41930425] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000764887200001 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/104973]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Chang, Xu |
| 作者单位 | 1.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 3.China Earthquake Adm, Inst Geophys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Wei,Wang, Shangxu,Chang, Xu,et al. Tomography with sparseness regularisation for ultrasonic velocity imaging[J]. JOURNAL OF GEOPHYSICS AND ENGINEERING,2022,19(1):85-105. |
| APA | Zhu, Wei,Wang, Shangxu,Chang, Xu,Zhai, Hongyu,He, Taiming,&Wu, Hezhen.(2022).Tomography with sparseness regularisation for ultrasonic velocity imaging.JOURNAL OF GEOPHYSICS AND ENGINEERING,19(1),85-105. |
| MLA | Zhu, Wei,et al."Tomography with sparseness regularisation for ultrasonic velocity imaging".JOURNAL OF GEOPHYSICS AND ENGINEERING 19.1(2022):85-105. |
入库方式： OAI收割
来源：地质与地球物理研究所
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