A Case Study on Usage of Electrical Resistivity Tomography for Dam Seepage Location, Chesterfield, Missouri

E V Torgashov, O N Kovin, N L Anderson


Four Electrical Resistivity Tomography (ERT) profiles and borehole data were acquired on the front face of the earth-filled dam and on the flanks, constituting Lake #1, in order to locate the seepage zone, the flow path, and to determine possible reasons of the seepage. The seepage, observed a year after the construction in the southwestern part of the lake, was severe and could cause further softening, slippage and erosion of soil, developing of pipe holes, increasing the water outflow and risk to the embankment integrity. The owner agreed to drain the lake in order to acquire geophysical and borehole data. Based on the analyses of the acquired ERT and borehole data, four solution-widened fracture zones trending from southwest to northeast were identified. It was concluded that the seepage pathway beneath the dam was through a solution-widened fracture zone, the top of which constituted the original stream channel.

Ключевые слова

dam seepage; resistivity and borehole data; fracture zone; ERT profiles

Полный текст:



Butler, Grant and Michael A. Siemens. 2010. Surficial Material Geologic Map of the Chesterfield 7.5' Quadrangle St. Charles and St. Louis Counties, Missouri. Geology and Digital Compilation by Missouri Department of Natural Resources, Division of Geology and Land Survey Geological Survey Program, Rolla, MO.

Chung Jae-Won, Rogers D. 2010. GIS-Based Virtual Geotechnical Database for the St. Louis Metro Area. Department of Geological Sciences and Engineering, Missouri University of Science and Technology, Rolla, MO.

Geoportal Missouri Spatial Data Information Service (MSDIS). URL: http://geoportal.missouri.edu/geoportal (Accessed 8th June 2015)

Loke M.N., Barker R.D. 1996. Rapid least-squares inversion of apparent resistivity pseudosection by quasi-Newton method. Geophysical Prospecting, V. 44, 131-152.

Middendorf M.A. et al., 2003. Geologic Map of Missouri. Department of Natural Resources.

Myat M., Wamweya A., Kovin O., Anderson N., Robison J. 2008. Application of Electrical Resistivity Method in Steeply Dipping Karst Terrane. Proc. of 11th Multidisciplinary Conf. “Sinkholes and the Engineering and Environmental Impacts of Karst (GSP 183)”, Tallahassee, FL, September 22-26, pp 91-97.

Torgashov E.V., Anderson N.A., Kovin O. 2010. Fault Detection Using Electrical Resistivity Tomography. Proceedings of SAGEEP 2010, Keystone, CO, pp. 865-876.

Unklesbay, A.G., Vineyard J.D. 1992. Missouri Geology: Three Billion Years of Volcanoes, Seas, Sediments, and Erosion. University of Missouri Press, Columbia and London.

Vandike J. 1997. Karst in Missouri, an Overview. Part 1. Missouri Department of Natural Resources.

Vineyard J.D., Feder G.L. 1982. Springs of Missouri. Missouri Department of Natural Resources, Division of Geology and Land Survey, U.S. Geological Survey. Water Resources Report Number 29.

DOI: http://dx.doi.org/10.17072/psu.geol.27.34


  • На текущий момент ссылки отсутствуют.

(c) 2015 E V Torgashov, O N Kovin, N L Anderson

URL лицензии: http://creativecommons.org/licenses/by/3.0/