干旱区生态环境知识资源中心(Arid): Derivation of empirical relationships between geotechnical parameters and resistivity using electrical resistivity tomography (ERT) and borehole data at Sohag University site, upper Egypt

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DOI	10.1016/j.jafrearsci.2019.103563
	Derivation of empirical relationships between geotechnical parameters and resistivity using electrical resistivity tomography (ERT) and borehole data at Sohag University site, upper Egypt
	Mohammed, M. A.1; Senosy, M. M.2; Abudeif, A. M.1
通讯作者	Abudeif, A. M.
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2019
卷号	158
英文摘要	The new site is located in desert region of rugged topography. Quaternary boulders, gravels, sands and clays intercalation are the main rock types in the area. Geophysical evaluation of the subsurface lithology and structures using 2D and 3D electrical resistivity tomography (ERT) of the proposed site for construction was the main target of the present study, in addition finding empirical relationships between rock's electrical resistivity and some geotechnical parameters are also another target. Four geoelectrical resistivity layers were discriminated after the 2D inversion. Inspection of all 2D inverted profiles and 3D electrical resistivity depth slices showed rapid lateral and vertical variations in electrical resistivity values indicating heterogeneity in soil section. Clayey gravels or clayey sands and clays facies are predominant and hence swelling actions of the foundation beds is highly expected. The results of electrical resistivity tomography (ERT) were correlated with that inferred from the boreholes within the investigated area. The geotechnical parameters: liquid limit L.L%, plastic limit P.L%, free swelling FS% and density Qu were calculated for representative samples collected from drilled boreholes. All samples showed considerably high L.L%, low to moderate P.L% with high FS% which characterizes clayey soil. A trial for finding empirical relationships between the geotechnical properties and the rock electrical resistivity (L.L%, P.L%, FS% and Qu) were carried out. These relations revealed that there is a considerable correlation between them when the rock has a resistivity more than 400 Omega m and poor correlation when the electrical resistivity is less than 400 Omega m. Accordingly, inferring applicable empirical equations between rock electrical resistivity and geotechnical parameters can be strong in the dry successions with a limited clays content, but in the wet or clayey soil materials the correlation will be weak and risky in application. From all obtained results and relationships, highly engineering awareness should be taken into account during establishing any construction in this site.
英文关键词	2D electrical resistivity tomography (ERT) Geotechnical properties Rock resistivity and geotechnical parameters relationships New sohag university
类型	Article
语种	英语
国家	Egypt
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000483456700032
WOS关键词	SUGGESTED METHODS ; GEOPHYSICS ; CONDUCTIVITY ; SENSITIVITY ; LANDSLIDES ; COMPLEX ; AQUIFER
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216633
作者单位	1.Sohag Univ, Sohag, Egypt; 2.Assiut Univ, Fac Sci, Dept Geol, Assiut, Egypt
推荐引用方式 GB/T 7714	Mohammed, M. A.,Senosy, M. M.,Abudeif, A. M.. Derivation of empirical relationships between geotechnical parameters and resistivity using electrical resistivity tomography (ERT) and borehole data at Sohag University site, upper Egypt[J],2019,158.
APA	Mohammed, M. A.,Senosy, M. M.,&Abudeif, A. M..(2019).Derivation of empirical relationships between geotechnical parameters and resistivity using electrical resistivity tomography (ERT) and borehole data at Sohag University site, upper Egypt.JOURNAL OF AFRICAN EARTH SCIENCES,158.
MLA	Mohammed, M. A.,et al."Derivation of empirical relationships between geotechnical parameters and resistivity using electrical resistivity tomography (ERT) and borehole data at Sohag University site, upper Egypt".JOURNAL OF AFRICAN EARTH SCIENCES 158(2019).