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2D inversion of DC resistivity method to detect high-resistivity targets inside dams

Abstract

As the first barrier of flood control, the integrity and continuity of dams are of the utmost importance. However, with the influence of natural weathering, running water erosion, and humanistic factors, various degrees of damage are prone to occur inside and outside dams. Therefore, it is necessary to detect the integrity of dams and evaluate their flood control capacity. Different from the previous detection of water-filled imperfect areas, we used numerical simulation and measured data analysis and considered the influence of actual noise to conduct DC resistivity detection and 2D inversion research on the high-resistivity imperfect areas existing in dams. The research results show that both the calculated apparent resistivity and the resistivity obtained by 2D inversion deviate from the real resistivity of the dam. A dam with a height less than 5 m has a relatively small influence on the 2D inversion results of the DC resistivity method, and the inversion results can accurately show the spatial information of the high-resistivity imperfect areas. The distance between the river and dam has a major influence on the inversion results, but the influence on the inversion results can be ignored when the distance is greater than 20 m in the model of this paper. The 2D inversion of the DC resistivity method can be used to detect high-resistivity imperfect areas of dams, and the 2D spatial information of the 3D geological bodies can be accurately obtained.


ISSN: 1083-1363
EISSN: 1943-2658
Serial Title: Journal of Environmental & Engineering Geophysics
Serial Volume: 28
Serial Issue: 2
Title: 2D inversion of DC resistivity method to detect high-resistivity targets inside dams
Affiliation: China University of Mine and Technology, School of Resource and Geoscience, Xuzhou, China
Pages: 109-117
Published: 202306
Text Language: English
Publisher: Environmental and Engineering Geophysical Society, Englewood, CO, United States
References: 32
Accession Number: 2024-008055
Categories: Engineering geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch maps
N30°45'00" - N35°00'00", E116°30'00" - E122°00'00"
Secondary Affiliation: Tianjin Water Planning Survey & Design Company, CHN, ChinaJiangsu Vocational Institute of Architectural Technology, CHN, China
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2024, American Geosciences Institute. Abstract, copyright, Environmental & Engineering Geophysical Society. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 202405
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