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Electrical Resistivity Response Due to the Variation of Embankment Shape and Reservoir Level  

Oh, Seok-Hoon (Kangwon National University)
Publication Information
Geophysics and Geophysical Exploration / v.11, no.3, 2008 , pp. 214-220 More about this Journal
Abstract
The distortion effect of electrical response for two-dimensional (2-D) DC resistivity method was verified in terms of 2-D inversion result of synthetic data obtained by three-dimensional (3-D) modeling, which is frequently applied to assess the safety of center core-type fill dam structure. The distortion effect is due to 2-D interpretation for 3-D structure. By the modeling analysis, we found that the water level is correctly described in the resistivity section around the middle part rather than each end side of the embankment due to the 3-D terrain effect, when the material of the embankment is assumed as horizontally uniform. And when we set the slope of outer rock fill part as uniform. the sharper the slope of the center core is, the more similar the resistivity section reflects. On the other hand, when the slope of the rock fill is steep, the resistivity section shows the water level at lower position than the real one, and the 3-D distortion effect at the end side of the embankment was enhanced.
Keywords
resistivity; distortion; safety of embankment; water level;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 김정호, 송윤호, 정승환, 2000, 전기전자탐사 기술을 이용한 지반 구조의 영상화, 2000년도 한국물리탐사학회한국지반공학회 지반조사위원회 공동특별강연논문집, pp. 121-154
2 Bergstrom, J., 1998, Geophysical methods for investigating and monitoring the integrity of sealing layer on mining waste deposits, Licentiate Thesis, Lulea Univ. of Technology, Lulea, Sweden
3 Panthulu, T. V., Krishnaiah, C., and Shirke, J. M., 2001, Detection of seepage paths in earth dams using self-potential and electrical resistivity methods, Engineering Geology, 59, 281-295   DOI   ScienceOn
4 오석훈, 선창국, 2004, 필댐 안정성 평가를 위한 물리탐사와 SPT 자료의 분석, 지구물리, 7(3), 171-183
5 Spitzer, K., 1995, A 3-D finite difference algorithm for DC resistivity modeling using conjugate gradient methods, Geophys. J. Int., 123, 903-914   DOI   ScienceOn
6 오석훈, 김형수, 2005, 필댐의 3차원 기하 효과에 따른 전기비저 항 왜곡 효과 분석, 한국물리탐사학회대한지구물리학회 2005 공동학술대회
7 조인기, 강형재, 김기주, 2006, 저수지 3차원 구조에 의한 전기비 저항 탐사자료의 왜곡, 물리탐사, 9, 291-298   과학기술학회마을
8 Song, S. H., Song, Y., and Kwon, B. D., 2005, Application of hydrogeological and geophysical methods to delineate leakage pathways in an earth fill dam. Special issue published jointly by ASEG 36, SEGJ 58, KSEG 8: pp. 92-96