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Monitoring Rock and Foundation Stability by Observing the Electromagnetic Fields, City of 15th of May, Cairo, Egypt
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Second EAGE International Conference on Engineering Geophysics, Nov 2013, cp-368-00008
- ISBN: 978-90-73834-66-8
Abstract
The present work provides a technical procedure to estimate the geomechanical and geoelectrical parameters as key information of the dynamic state and stability of the massive structure. It involves the application of Control Source Electromagnetic "CSEM" approach developed by GIF UB RAS to image the ranked deformation levels in the massive structure. The Wide Profile System of Observation had been used to monitor the three component electromagnetic field along predefined measuring lines at Quarter 27 in the City of 15th of May, Helwan, Egypt. Four cycles of observation had been carried out in 2008, 2010, 2011, and 2012. The acquired data set had been subjected to analytical processing procedure to estimate the changes in the geotechnical parameters over time of observation. Interpreting the measured data concluded that the general dynamic state at the area is getting worse over the time, this is reflected in the crack's intensities and positions, also on the changes in the lateral distribution of the geoelectrical heterogeneity as indicator for water saturation.