Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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Investigation of Underground buried Cables based on Ground Penetrating Radar Data

지표 투과 레이더 데이터 기반 지하 매설 케이블 조사

  • Choi, SungKi (Gyeonggi Housing & Urban Development) ;
  • Yoon, Hyung-Koo (Dept. of Disaster Safety Engrg., Daejeon Univ.) ;
  • Kim, YoungSeok (Northern Infrastructure Specialized Team, Korea Institute of Civil Engrg. and Building Technology) ;
  • Kim, Sewon (Dept. of Geotechnical Engrg. Research, Korea Institute of Civil Engrg. and Building Technology) ;
  • Choi, Hyun-Jun (Northern Infrastructure Specialized Team, Korea Institute of Civil Engrg. and Building Technology) ;
  • Min, Dae-Hong (Dept. of Disaster Safety Engrg., Daejeon Univ.)
  • 최성기 (경기주택도시공사 고덕사업부) ;
  • 윤형구 (대전대학교 재난안전공학과) ;
  • 김영석 (한국건설기술연구원 북방인프라특화팀) ;
  • 김세원 (한국건설기술연구원 지반연구본부) ;
  • 최현준 (한국건설기술연구원 북방인프라특화팀) ;
  • 민대홍 (대전대학교 재난안전공학과)
  • Received : 2024.04.12
  • Accepted : 2024.04.16
  • Published : 2024.04.30
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Abstract

Underground buried cables can cause disconnections during the construction of roads and other subterranean structures due to uncertain designs. This paper describes experiments conducted to detect and verify the locations of these cables utilizing ground penetrating radar (GPR). The experiments were carried out at an active road construction site, where cable burial was anticipated. The GPR used operated within a frequency range of 400 MHz to 900 MHz to probe underground structures. The exploration methodology consisted of an initial GPR test to survey the entire area, followed by a secondary test informed by the results of the initial experiment, incorporating a diverse and increased number of lines. The findings confirmed the hyperbolic reflection patterns of cables at consistent locations along the same lines. These patterns were then compared to existing designs to corroborate the presence of cables at the identified locations. This research establishes an effective GPR methodology based on the electromagnetic wave reflection pattern, specifically the hyperbola, to detect difficult-to-locate underground buried cables.

지하 매설된 케이블은 불확실한 설계 도면으로 도로 및 지하 구조물 건설 시 단선이 발생한다. 본 논문은 지하 매설 케이블의 위치를 지표 투과 레이더(GPR)로 탐지하고 검증하는 실험을 수행하였다. 수행된 실험 장소는 케이블 매설이 예상되는 실제 도로 건설 부지에서 수행하였으며 400MHz~900MHz의 고주파수 대역을 갖는 지표 투과 레이더를 사용하여 지하 내부 구조를 측정하였다. 탐사 방법은 조사 지역 전체를 파악하기 위한 지표 투과 레이더 1차 실험과 1차 실험 결과 기반의 2차 실험을 수행하였으며 측선 방향의 다양성과 개수를 증가시키는 방법을 사용하였다. 실험 결과는 동일선상의 위치에서 일관된 케이블에서 반사되는 파형 특징인 하이퍼볼라를 확인하였으며 설계 도면 비교 결과 해당 위치에 케이블이 매설된 것을 검증하였다. 해당 연구 결과는 탐지하기 어려운 지하 매설 케이블의 위치를 전자기파 반사 파형인 하이퍼볼라를 기반으로 지표 투과 레이더에 적합한 방법론을 제시한다.

Keywords

Acknowledgement

본 연구는 과학기술정보통신부의 한국연구재단(NRF2020R1A2C2012113) 중견연구 사업과 국토교통과학기술진흥원의(RS-2022-00143644) '오일 생산플랜트의 패키지화 설계 및 통합실증 기술개발'의 지원으로 수행되었으며 이에 감사드립니다.

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