Geophysical Investigation to Delineate Hazardous Cavities in Al-Hassa Karstic Region, Kingdom of Saudi Arabia

被引：7
作者：
Abdallatif, Tareq [1 ,2 ]
Khafagy, Abdel-Samad A. B. [1 ,3 ]
Khozym, Ashraf [1 ,2 ]
机构：
[1] Dar Al Handasah Shair & Partners, Cairo 11511, Egypt
[2] NRIAG, Cairo 11722138, Egypt
[3] Ain Shams Univ, Fac Educ, Cairo, Egypt
来源：
ENGINEERING GEOLOGY FOR SOCIETY AND TERRITORY, VOL 5: URBAN GEOLOGY, SUSTAINABLE PLANNING AND LANDSCAPE EXPLOITATION | 2015年
关键词：
Ground penetrating radar; Resistivity tomography; Engineering geology; Cavities; Al-Hassa;
D O I：
10.1007/978-3-319-09048-1_98
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Near-surface cavities in karstic carbonate regions are of a particular engineering concern due to their propensity to cause ground subsidence and hazardous effects on the constructions. In a case study at Al-Hassa area, Kingdom of Saudi Arabia (KSA), traditional application of probing techniques has not thoroughly covered the study area due to economic, technical and time limitations. Therefore, buried near-surface cavities became a threat to the proposed constructions in the vicinity of the study area. In this paper, the application of an integrated geophysical survey to delineate the concealed cavities using ground penetrating radar (GPR) and 2D electrical resistivity tomography (ERT) will be presented. Cavities located down to 4 m below natural ground level were well detected by GPR, while those situated deeper than 4 m were well detected by 2D ERT. Correlation between geophysical and engineering geological data has shown a good agreement, indicating the great benefit of geophysical investigation in identifying the ground conditions for major engineering projects in karstic regions like Al-Hassa area. Around thirty two detected cavernous zones were confirmed by borings, and were subjected to suitable ground remediation.
引用
收藏
页码：507 / 514
页数：8
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