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| Titel |
Estimating the Soil Instability from CSEM Monitoring Data at the City of 15th May, Egypt |
| VerfasserIn |
Olga Hachay, Magdy Atya, Oleg Khachay, El Said A. El Sayed |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250087035
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| Publikation (Nr.) |
 EGU/EGU2014-1005.pdf |
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| Zusammenfassung |
| The site of investigation, 15th May city, is a new suburb of Helwan, at about 35 km south of
Cairo, Egypt. The work is aimed to investigate the rock mass stability at “Quarter 27” in 15th
May City. A controlled source electromagnetic (CSEM) approach developed earlier by IGF
UB RAS (Geophysical Federal Institute, Ural Branch of Russian Academy of Science) is
applied to image the ranked deformation levels in the massive structure. The wide profile
system of observation has been used to monitor the three components of the alternating
magnetic field along predefined measuring lines in the study area. Four cycles of observation
have been carried out in 2008, 2010, 2011, and 2012. The acquired data sets have been
subjected to analytical processing procedure to estimate the changes in the geotechnical
parameters during the time of these four cycles of observation. The analytical treatments
provided good information about the structure of the rock massive and its rank of
degradation, the lateral distribution of the geotechnical heterogeneity, and finally a
conclusive outcome about foundation stability. We conclude that the general dynamic
state close to the destruction level within the investigation area is getting worse
over the time; this is reflected in the crack’s densities and positions, also on the
changes in the lateral distribution of geoelectric heterogeneity as an indicator of
the saturation of the surface rock in the study area with water [1]. 1. Magdy A.
Atya, Olga A. Hachay, Mamdouh M. Soliman, Oleg Y. Khachay, Ahmed B. Khalill,
Mahmoud Gaballah, Fathy F.Shaaban and Ibrahim A.El. Hemali. CSEM imaging of the
near surface dynamics and its impact for foundation stability at quarter 27,15-th of
May City, Helwan, Egypt. // Earth sciences research journal, 2010,Vol.14, N1,
p.76-87. |
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