Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
권호 표지

Detection of Limesilicate Cavities by 3-D Resistivity Survey

3차원 전기비저항탐사에 의한 석회암 공동탐지

  • Park, Sam-Gyu (Geotechnical Engineering Division, Korea Institute of Geoscience & Mineral Resources (KIGAM)) ;
  • Yi, Myeong-Jong (Geotechnical Engineering Division, Korea Institute of Geoscience & Mineral Resources (KIGAM)) ;
  • Kim, Chang-Ryol (Geotechnical Engineering Division, Korea Institute of Geoscience & Mineral Resources (KIGAM)) ;
  • Son, Jeong-Sul (Geotechnical Engineering Division, Korea Institute of Geoscience & Mineral Resources (KIGAM)) ;
  • Kim, Jung-Ho (Geotechnical Engineering Division, Korea Institute of Geoscience & Mineral Resources (KIGAM)) ;
  • Cho, Seong-Jun (Geotechnical Engineering Division, Korea Institute of Geoscience & Mineral Resources (KIGAM)) ;
  • Seo, Goo-Won (Environmental & Geological Engineering Division, Korea Rural Community & Agriculture Corporation (KRC))
  • 박삼규 (한국지질자원연구원 지반안전연구부) ;
  • 이명종 (한국지질자원연구원 지반안전연구부) ;
  • 김창렬 (한국지질자원연구원 지반안전연구부) ;
  • 손정술 (한국지질자원연구원 지반안전연구부) ;
  • 김정호 (한국지질자원연구원 지반안전연구부) ;
  • 조성준 (한국지질자원연구원 지반안전연구부) ;
  • 서구원 (한국농촌공사 전라남도본부 환경지질사업부)
  • Published : 2006.03.24
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Abstract

In this study, we examined the applicability of three-dimensional electrical resistivity survey to detect underground cavities of ground subsidence area at the field test site, located at Yongweol-ri, Muan-gun in Korea. Underground cavities are widely present within the limesilicate bedrock overlain by the alluvial deposits in the area of the test site where the ground subsidences have occurred in the past. The limesilicate cavities are mostly filled with groundwater and clays in the test site. Thus, cavities have low electrical resistivity compared to the surrounding host bedrock. The results of the study have shown that the zones of low resistivity correspond to the zones of the cavities identified in the boreholes at the site, and that the three-dimensional electrical resistivity survey used are very effective to detect underground cavities.

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