Resource

Investigation of Geophysical Methods for Assessing Seepage and Internal Erosion in Embankment Dams: Long-Term Resistivity and Self-Potential Monitoring of Embankment Dams - Experiences from Hällby and Sädva Dams, Sweden

Resource Type
Reports
Reference Title
Investigation of Geophysical Methods for Assessing Seepage and Internal Erosion in Embankment Dams: Long-Term Resistivity and Self-Potential Monitoring of Embankment Dams - Experiences from Hällby and Sädva Dams, Sweden
Author/Presenter
Johansson, S.
Friborg, J.
Dahlin, T.
Sjodahl, P.
Organization/Agency
CEATI
BC Hydro
HydroResearch Sam Johansson AB
Lund University
Publisher Name
CEATI
Year
2005
Document Number
T002700 0205C
Abstract/Additional Information

Methods for seepage monitoring and internal erosion detection are essential for the safety of earth embankment dams. This work aims at developing improved methodology to indirectly monitor seepage flow changes using resistivity and self-potential (SP), and is a continuation and expansion of previous research. The project is built around an automatic monitoring system operating at Hällby since 1996, and a similar installation at Sädva in operation since May 2001.
This volume marks one of a series of reports on the subject of geophysical methods and their use in assessing seepage and internal erosion in embankment dams.