Journal of Korean Society of Disaster and Security (한국방재안전학회논문집)

Korean Society of Disaster & Security (한국방재안전학회)
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Analysis of GPR Exploration Limit of Open-Cut Type Excavation

개착식 굴착현장의 GPR 탐사한계 분석기법 연구

  • Han, Yushik (Geotechnical Engineering Research Institute, Korean Geotechnical Society) ;
  • Kim, Woo-Seok (Geotechnical Engineering Research Institute, KICT)
  • 한유식 (한국지반공학회 지반공학연구소) ;
  • 김우석 (한국건설기술연구원 지반연구소)
  • Received : 2017.06.13
  • Accepted : 2017.07.04
  • Published : 2017.07.05
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Abstract

Accurate exploration of the risk factors of the ground subsidence is needed to predict and evaluate the subsidence of the surrounding ground due to the excavation of the ground. In this study, we analyzed the distribution of soil relaxation area by analyzing the behavior around the ground excavation site and simulated the GPR exploration under various conditions. As a result, Although there are some differences according to the water content, distribution of the strata and the distribution of the relaxation region were confirmed in the unsaturated soil, and it was found that there was a difficulty in the GPR exploration in the saturated soil.

지반 굴착에 따른 주변 지반의 함몰 문제를 예측하고 평가하기 위해서는 지반함몰 위험인자의 정확한 탐사가 필요하다. 이 연구에서는 지반굴착현장 주변의 거동 분석을 통하여 지반이완영역 분포를 분석하고 여러 가지 조건에서 GPR 탐사를 시뮬레이션 한 결과, 함수율에 따라 다소 차이는 있으나 불포화 지반에서는 지층의 분포 및 이완영역 분포를 확인할 수 있었으며, 포화 지반에서는 GPR 탐사의 어려움이 있는 것으로 나타났다.

Keywords

References

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