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Identification of Air Cavities Using GPR under Different Soil Compaction Conditions Related to Sinkhole Formation
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作者 Harith Iman Othman Kalam Ainon Nisa Othman +2 位作者 Mohamad Hezri Razali Pauziyah Mohammad Salim akhbaaruddin abd hamid 《Revue Internationale de Géomatique》 2025年第1期973-985,共13页
Ground Penetrating Radar(GPR)is a widely used method that is non-destructive for underground or subsurface detection.It is used in various fields and has proved to be reliable and effective.This research focuses on de... Ground Penetrating Radar(GPR)is a widely used method that is non-destructive for underground or subsurface detection.It is used in various fields and has proved to be reliable and effective.This research focuses on detecting the presence of air cavities using GPR and analyzing the radargram output based on the compactness of soil and different frequencies.The compactness is used to illustrate the presence of cavities underground artificially.The research examines how variations in the compactness of soil affect the radargram response in showing the presence of cavities using different frequencies.Experimental results demonstrate that lower permittivity materials enhance signal penetration but reduce reflection contrast,whereas higher permittivity materials result in stronger reflections,improving cavity detection.The findings highlight the importance of frequency selection and material properties in optimizing GPR surveys for subsurface anomaly detection,and by having artificially created cavities,the results can be studied to see the changes. 展开更多
关键词 GPR CAVITIES COMPACTNESS FREQUENCY land subsidence
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