Using 2D Resistivity Imaging Technique to Detect and Delineate Shallow Unknown Cavities In Al-Haqlaniyah Area, Western Iraq
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Published:2022-03-30
Issue:
Volume:
Page:1091-1102
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ISSN:2312-1637
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Container-title:Iraqi Journal of Science
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language:
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Short-container-title:eijs
Author:
Al-Jumaily Osama H.,Abed Ali M.,Ali Kamal K.
Abstract
Basal breccia unconformity layer between Anah and Euphrates Formations in Al-Haqlaniyah area, Western desert, include enormous sinkholes and cavities usually cause severe damages to any kind of engineering facilities built over it. Two-dimensional resistivity imaging has been applied to detect the depth and extent of the subsurface caves at five stations. The dipole-dipole array is chosen with an electrode spacing of 2 meters. 2D Dipole-dipole imaging inverse models show the resistivity values have a big variation between the anomalous background resistivity of rocks and part of cavities. These models showed shallow cavities at 1 to 3 m depth and others at 5to 6 m depth and extending to a depth of 23 m. The unconformity layer is less cohesive than the rocks beneath and above it. So it was the best area for the caves to be formed as a result of dissolving its rocks by leaking rainwater and groundwater. Therefore, it must be a pre-engineering preparation before starting any urban construction of the population in the study area or adjacent areas to avoid risks.
Publisher
University of Baghdad College of Science
Subject
General Biochemistry, Genetics and Molecular Biology,General Chemistry,General Computer Science
Cited by
1 articles.
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