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2025 Vol.41, Issue 4
Study on the Optimization of Subsurface Utility Detection Using GPR with Respect to Dielectric Constant Variations

유전상수 변화에 따른 GPR 기반 지중관로 탐사 효율화 연구

Haeju Do1
,
Tae-Min Oh2*
,
Dong-Hyun Lee3
,
Hee Hwan Ryu4
도 해주1
,
오 태민2*
,
이 동현3
,
류 희환4
1Member, Ph.D. Student, Dept. of Civil and Environmental Engineering, Pusan National Univ.
2Member, Associate Prof., Dept. of Civil and Environmental Engineering, Pusan National Univ.
3Graduate Student, Dept. of Civil and Environmental Engineering, Pusan National Univ.
4Member, Principal Researcher, Korea Electric Power Corporation Research Institute
1정회원, 부산대학교 사회환경시스템공학과 박사과정
2정회원, 부산대학교 사회환경시스템공학과 부교수
3비회원, 부산대학교 사회환경시스템공학과 석사과정
4정회원, 한국전력공사 전력연구원 책임연구원
*Corresponding Author
31 August 2025. pp. 7-17
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Abstract

Ground penetrating radar (GPR) is a technology that analyzes reflected waves generated by propagating radar signals into the ground or a structure. GPR is widely used as a nondestructive method for detecting geological structures and underground utilities. The dielectric constant is a key factor in GPR technology, as it determines the resolution of the electromagnetic waves and the quality of the raw data. Therefore, when conducting GPR exploration, the effect of the dielectric constant must be considered, and numerous studies have addressed this issue. However, previous studies only studied how to calculate the ground dielectric constant under laboratory conditions, meaning that extensive preliminary investigations are still required in practice. Therefore, in this study, the dielectric constant suitable for GPR exploration was calculated by analyzing the quality of raw data according to the dielectric constant of the ground. The results of this study are expected to serve as basic data for calculating the ground dielectric constant in on-site ground exploration using GPR.

Keywords
Dielectric constant
GPR
Ground exploration
Subsurface pipeline

GPR(Ground Penetrating Radar)을 활용한 지반 탐사 기술은 레이다를 지반이나 구조물로 전파하여 반사파를 분석하는 기술이다. GPR 탐사 기술은 비파괴적으로 지질 구조 및 지하 매설물 등의 위치 파악 목적으로 활발히 활용되고 있다. 유전상수는 전자기파와 원시데이터의 해상도를 결정하는 GPR 기술의 주요인자이다. 따라서 GPR을 활용한 지반 탐사를 수행할 때, 그 지반의 유전상수에 대한 영향을 필수적으로 고려해야 한다. 하지만 기존 연구에서의 유전상수 산정 방법은 현장에서 신속하게 할 수 없어 많은 사전 조사들이 수행되어야 한다. 따라서 본 연구에서는 지반의 유전상수에 따른 원시 데이터의 품질을 분석하여 현장 지반 탐사 적합 유전상수를 산정하였다. 본 연구결과는 GPR 기술을 활용한 현장 지반 탐사를 위한 지반 유전상수 산정의 기초자료로 유용하게 활용될 것으로 기대된다.

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Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 41
  • No :4
  • Pages :7-17
  • Received Date : 2025-03-07
  • Revised Date : 2025-06-20
  • Accepted Date : 2025-06-29
  • DOI :https://doi.org/10.7843/kgs.2025.41.4.7
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