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A Study on the Change of Electrical Characteristics of Sand

모래지반에서의 전기적 특성 변화에 관한 연구

  • Han, Yushik (Geotechnical Engineering Research Institute, Korean Geotechnical Society) ;
  • Yoo, Ki Cheong (Geotechnical Engineering Research Institute, Korean Geotechnical Society)
  • 한유식 (한국지반공학회 지반공학연구소) ;
  • 류기정 (한국지반공학회 지반공학연구소)
  • Received : 2017.06.13
  • Accepted : 2017.07.04
  • Published : 2017.07.05

Abstract

It is very important to understand the electromagnetic characteristics of underground media in GPR (Ground Penetrating Radar) survey. Depending on the electrical characteristics of the underground medium, the energy of the electromagnetic wave becomes relatively small, and reflection from the interface may become difficult. In this study, electrical characteristics of sandy soils under various (loose and dense) conditions were analyzed. As a result, In dry sand is the dielectric constant increased as the relative density increased, and the dielectric constant and electrical conductivity increased as the moisture content of the sand increased.

지표투과레이다 탐사에 있어서 지하매질의 전기적 특성 파악은 매우 중요하다. 지하매질의 전기적 특성에 따라 전자기파의 에너지가 상대적으로 작아져 경계면으로부터 반사가 어려워 질수 있다. 이 연구에서는 다양한(느슨하고 조립한) 조건의 모래지반에 대한 전기적 특성을 분석 한 결과, 마른모래에서는 상대밀도가 증가할수록 유전상수는 증가하였으며, 모래의 함수율이 증가할수록 유전상수와 전기전도도의 값은 증가 하였다.

Keywords

References

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