|Table of Contents|

[1] Jiang Fuyu, Gao Likun, Chen Haijun, Ni Jiong, et al. Optimizing data for electrical resistivity tomography in hardened sites through the ratio method [J]. Journal of Southeast University (English Edition), 2024, 40 (4): 372-385. [doi:10.3969/j.issn.1003-7985.2024.04.006]
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Optimizing data for electrical resistivity tomography in hardened sites through the ratio method()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
40
Issue:
2024 4
Page:
372-385
Research Field:
Other Disciplines
Publishing date:
2024-12-03

Info

Title:
Optimizing data for electrical resistivity tomography in hardened sites through the ratio method
Author(s):
Jiang Fuyu1;  Gao Likun2;  Chen Haijun3;  Ni Jiong1;  Li Fuqiang4
1 School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China
2 The First Geological Brigade of Jiangsu Geology and Mineral Resources Bureau, Nanjing 210041, China
3 Nanjing Hydraulic Research Institute, Nanjing 210029, China
4 China Energy Engineering Group Hunan Electric Power Design Institute Co., Ltd., Changsha 410007, China
Keywords:
ratio method;  resistivity tomography;  hardened site;  distortion principle;  data optimization
PACS:
P631
DOI:
10.3969/j.issn.1003-7985.2024.04.006
Abstract:
To reduce the shielding effect of hardened layers on electrical resistivity tomography, a ratio method based on the distortion correction principle and the isolation coefficient is proposed. The effects of the resistivity and thickness of hardened concrete layers on the detection of target objects are explored. Both numerical simulations and indoor tank tests indicate that when the ratio method is employed to correct the original collected data, the maximum allowable error for the isolation coefficient should not exceed 1%. Notably, when the ratio of hardened layer thickness to electrode spacing does not exceed 1, correction through this method significantly enhances the recognition capability of target objects. However, when the hardened layer thickness is greater than the electrode spacing by a factor of 2 or more, the ratio method cannot achieve satisfactory results. The case study of flood control engineering detection in the Zhangxi section of the Huangpen River in Dongzhi County demonstrates that the detection effect after correction by the ratio method is comparable to that for the adjacent unhardened pavement, and the influence of the hardened layer is obviously weakened, resulting in more reliable results.

References:

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Memo

Memo:
Biography: Jiang Fuyu(1981—), male, doctor, associate professor, jiangfy@hhu.edu.cn.
Foundation item: National Key Research and Development Program of China(No. 2021YFC3000103).
Citation: Jiang Fuyu, Gao Likun, Chen Haijun, et al.Optimizing data for electrical resistivity tomography in hardened sites through the ratio method[J].Journal of Southeast University(English Edition), 2024, 40(4):372-385.DOI:10.3969/j.issn.1003-7985.2024.04.006.
Last Update: 2024-12-20