Detection and evaluation of horizontal fractures in earth dams using the self-potential method

Rozycki, A.; Fonticiella, J.M. Ruiz; Cuadra, A.

doi:10.1016/j.enggeo.2005.09.013

Cited by 73 publications

(48 citation statements)

References 3 publications

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“…The inversion of self-potential signals is in itself not new. However, most of the classical methods were based on polarized spheres (Yungul 1950), dipole current lines (Paul 1965), source and sink pairs (Hase et al 2005), or other simple geometries (Nourbehecht 1963;Fitterman and Corwin 1982;Rozycki et al 2006). Such types of methods have also been used (and abused) to interpret other potential field problems in magnetism and in gravity.…”

Section: Forward and Inverse Modelingmentioning

confidence: 98%

Review: Some low-frequency electrical methods for subsurface characterization and monitoring in hydrogeology

et al. 2012

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Low-frequency geoelectrical methods include mainly self-potential, resistivity, and induced polarization techniques, which have potential in many environmental and hydrogeological applications. They provide complementary information to each other and to in-situ measurements. The self-potential method is a passive measurement of the electrical response associated with the in-situ generation of electrical current due to the flow of pore water in porous media, a salinity gradient, and/or the concentration of redoxactive species. Under some conditions, this method can be used to visualize groundwater flow, to determine permeability, and to detect preferential flow paths. Electrical resistivity is dependent on the water content, the temperature, the salinity of the pore water, and the clay content and mineralogy. Time-lapse resistivity can be used to assess the permeability and dispersivity distributions and to monitor contaminant plumes. Induced polarization characterizes the ability of rocks to reversibly store electrical energy. It can be used to image permeability and to monitor chemistry of the pore water-minerals interface. These geophysical methods, reviewed in this paper, should always be used in concert with additional in-situ measurements (e.g. in-situ pumping tests, chemical measurements of the pore water), for instance through joint inversion schemes, which is an area of fertile on-going research.

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Section: Forward and Inverse Modelingmentioning

confidence: 98%

Review: Some low-frequency electrical methods for subsurface characterization and monitoring in hydrogeology

et al. 2012

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“…The spontaneous potential method has been used for many years in karstic areas (Stevanovic, Dragisic, 1998;Lange, 1999;Rozycki et al, 2006;Guichet et al, 2006;Jardani et al, 2007;Jardani et al, 2009, Jouniaux et al, 2009Robert et al, 2011).…”

Section: Study Areamentioning

confidence: 99%

Sinkholes and the Engineering and Environmental Impacts of Karst: Proceedings of the Fourteenth Multidisciplinary Conference

2015

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“…Self-potential (SP) measurements have long been used to detect the presence of leakage through dams and dikes that pose a potential hazard to these structures (Al-Saigh et al, 1994;Panthulu et al, 2001;Song et al, 2005;Rozycki et al, 2006;Moore et al, 2011), to characterise geothermal resources (Anderson and Johnson, 1973;Corwin and Hoover, 1979;Ishido and Pritchett, 1999), to determine hydraulic properties of the shallow subsurface (Rizzo et al, 2004) and to evaluate groundwater movement and flow paths (Schiavone and Quarto, 1984;Fournier, 1989;Jardani et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Characterisation of hydraulically-active fractures in a fractured granite aquifer

Lee

Kim

2015

WSA

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In this study, the practical usefulness and fundamental applicability of a self-potential (SP) method for identifying the hydraulically-active fractures were evaluated by a comparison of SP methods with other geophysical logging methods and hydraulic tests. Potentially permeable fractures intersecting a shallow, 10-m borehole were first identified using conventional geophysical methods such as acoustic borehole televiewer imaging and temperature, electrical conductivity and gamma-gamma logs. These results were then compared to results of analysis using the SP method. Constant pressure injection and recovery tests were conducted for verification of the hydraulic properties of the fractures identified by various logging methods. The acoustic borehole televiewer and gamma-gamma logs detected the openings or weathering zones associated with fractures intersecting the borehole, but they could not prove that groundwater was flowing through the detected fractures. The temperature and fluid-column electrical conductivity logs were unable to detect the fractured zones where groundwater in the borehole flows out to the surrounding rock aquifers. Comparison of results from the different methods tested showed that the most effective correlation between logs and the distribution of hydraulic conductivity was given by the SP signals, and that SP logging can accurately indicate the location of hydraulically-active permeable fractures. Based on these results, the SP method is recommended for determining the location of hydraulically-active fractures rather than other conventional geophysical logs. This self-potential method can be effectively applied in the initial stage of a site investigation to select the optimal site location or to evaluate the hydrogeological properties of fractures in underground exploration studies, such as those related geothermal reservoir evaluation and radioactive waste disposal.

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Detection and evaluation of horizontal fractures in earth dams using the self-potential method

Cited by 73 publications

References 3 publications

Review: Some low-frequency electrical methods for subsurface characterization and monitoring in hydrogeology

Review: Some low-frequency electrical methods for subsurface characterization and monitoring in hydrogeology

Sinkholes and the Engineering and Environmental Impacts of Karst: Proceedings of the Fourteenth Multidisciplinary Conference

Characterisation of hydraulically-active fractures in a fractured granite aquifer

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