Investigation of Earth Dam Seepage using Geo-resistivity Modelling: A Case of Asa Dam, Ilorin-Nigeria
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Date
2014-11
Authors
Lawal, S. K.
Nwankwo, L. I.
& Lawal, T. O.
Journal Title
Journal ISSN
Volume Title
Publisher
Nigerian Association Mathematical Physics
Abstract
A geo-resistivity modelling has been applied in the investigation of seepage around Asa Earth Dam in Ilorin, Nigeria. The electrical resistivity data were acquired using Wenner configuration. The resistivity values in the survey area vary between 0.05 and 1800 ohm-meter and also suggest two geo-electrical layers: a conductive layer interpreted to be caly/wet-to-moist sand, and a more resistivity layer interpreted to be granite intrusions characteristic of ilorin city. The results further propose anomalous conductive zones within the substance, which have lateral extension and therefore interpreted as potential pathways for water seepage from the dam.
Description
Keywords
Georesistivity, Wenner, Modelling, Dam, Seepage, Ilorin
Citation
Lawal, et al. (2014). Investigation of Earth Dam Seepage using Geo-resistivity Modelling: A Case of Asa Dam, Ilorin-Nigeria