한국지반공학회논문집 (Journal of the Korean Geotechnical Society)

  • 제21권6호
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  • Pages.147-154
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  • 2005
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  • 1229-2427(pISSN)
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  • 2288-646X(eISSN)
한국지반공학회 (Korean Geotechnical Society)
권호 표지

Water Content Reflectometer(WCR)을 이용한 매립지반 최종 복토층의 체적 함수비 측정에 관한 연구

A Study on the Measurement of Volumetric Water Content Using WCR in Final Cover Layer of Landfill

  • 김경철 (위스콘신주립대학교-메디슨 토목환경공학과) ;
  • 황규호 (위스콘신주립대학교-메디슨 토목환경공학과) ;
  • 이송 (서울시립대학교 도시과학대학 토목환경공학과)
  • Kim Kyung-Chul (Dept. of Cibil and Environmental Engrg., Univ., of Weisconsin-Madison) ;
  • Hwang Koou-Ho (Dept. of Cibil and Environmental Engrg., Univ., of Weisconsin-Madison) ;
  • Lee Song (Univ. of Seoul, Dept. of Civil Engrg.)
  • 발행 : 2005.08.01
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초록

본 연구는 매립지 최종 복토층의 체적함수비 측정을 위한 저주파수 WCR(Water Content Reflectometer)의 Calibration 에 관한 것이고, Calibration의 검증은 흙의 전기전도도와 물성치를 이용하여 평가하였다. WCR 주기에 대한 체적함수비의 선형 Calibration은 높은 상관성을 보였다. 흙의 전기전도도가 증가할수록 Calibration의 기울기가 감소하는 것으로 나타났다. Calibration의 기울기는 점토의 함유량, 유기질의 함유량, 액성한계, 소성한계가 높은 흙, 즉, 전기전도도가 전형적으로 높은 흙에서 낮은 값을 보였다. 낮은 주파수영역을 갖는 WCR을 활용하여 좋은 계측결과를 얻을 수 있다는 것이 본 연구를 통해 보여지고 있다.

This study deals with the calibration of low-frequency water content reflectometer for measuring the volumetric water content of soils in landfill final cover layer, and the validity of calibrations was evaluated by electrical conductivity and index properties of the soils. Linear calibrations concerning volumetric water content to WCR period provided good agreement with the data. Analysis of the calibration data indicates that the slope of the calibration decreases as the electrical conductivity of the soil increases. Lower slopes correspond to soils with greater clay content, organic content, liquid limit, and plasticity index, which typically have higher electrical conductivity. It could be well explained that WCR can operate in a lower frequency range.

키워드

참고문헌

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