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GPR Exploration of Non-metallic Water Pipes Linked with Network RTK

네트워크 RTK와 연계한 비금속 상수관의 GPR 탐사

  • Lee, Keun-Wang (Department of the Multimedia Science, Chungwoon University) ;
  • Park, Joon-Kyu (Department of Civil Engineering, Seoil University)
  • 이근왕 (청운대학교 멀티미디어학과) ;
  • 박준규 (서일대학교 토목공학과)
  • Received : 2020.12.02
  • Accepted : 2021.02.05
  • Published : 2021.02.28

Abstract

GPR is used for non-destructive investigations, ground investigations, and underground facilities exploration at construction sites. In this study, the applicability to GPR exploration of water pipes linked to Network RTK was presented. Data on the water supply pipes in the study site were acquired using GPR, and the location and depth of buried water pipes could be measured. The accuracy was evaluated from the GNSS observation performance and showed a deviation of -0.16m ~ 0.15m. This satisfied the equipment performance of the public survey work regulation, suggesting that the exploration of water pipes using GPR is possible. Because GPR does not require grounding installation, as in conventional metal pipe detectors, it will increase the efficiency of work for underground facility exploration. Exploration using GPR can acquire the location and depth of metallic and non-metallic underground facilities, so it can be utilized in the construction of a GIS system. If a comparison of the exploration characteristics is carried out, it will be possible to present various uses of underground facility exploration using GPR.

GPR은 전자파를 지반 또는 대상물에 방사시켜 반사체에서 돌아온 반사파를 이용하는 탐사법으로써 광산의 지반침하나 건설현장의 비파괴 조사, 지반조사, 지하시설물 탐사 등에 활용되고 있다. 본 연구에서는 네트워크 RTK와 연계한 GPR을 이용한 비금속 상수관의 탐사에 대한 활용성을 제시하고자 하였다. GPR을 이용하여 연구대상지 상수관에 대한 데이터를 취득하였으며, 상수관로에 대한 위치 및 매설 심도를 측정하였다. 정확도 평가를 위해 GNSS 관측 성과와 GPR 탐사 결과를 비교하였으며, -0.16m ~ 0.15m의 편차를 확인하였다. 이러한 결과는 공공측량 작업규정의 기기성능을 만족하는 것으로 GPR을 이용한 상수관의 탐사가 가능함을 제시하였다. GPR은 기존 금속관로탐지기에서와 같은 접지 설치가 필요하지 않기 때문에 지하시설물 탐사를 위한 작업의 효율성 증대에 기여할 것이며, GPR을 이용한 탐사는 금속 및 비금속 지하시설물에 대한 위치와 심도를 동시에 취득할 수 있어 GIS 시스템 구축을 위한 데이터로 이용이 가능하다. 향후 추가적인 연구를 통해 금속 및 비금속관로 탐사와 콘크리트, 아스팔트 등 지면 매질에 따른 탐사 특성비교 연구가 이루어진다면 GPR을 이용한 지하시설물 탐사의 다양한 활용성을 제시할 수 있을 것이다.

Keywords

References

  1. J. Y. Lee, J. W. Shim, S. R. Lee, K. H. Lee, "A Consideration on the Electromagnetic Properties of Road Pavement Using Ground Penetrating Radar (GPR)", Journal of the Korean Society of Civil Engineers, Vol.40, No.3, pp.285-294, Jun. 2020. DOI: https://doi.org/10.12652/Ksce.2020.40.3.0285
  2. J. J. Park, E. C. Shin, K. S. Park, H. S. Shin, K.G. W. Hong, "An Experimental Study on Detecting materials of GPR for Maintenance of Restored Cavities", Journal of Korea Society of Disaster Information, Vol.14, No.4, pp.430-439, Dec. 2018. DOI: http://dx.doi.org/10.15683/kosdi.2018.12.31.430
  3. C. M. Lee, J. S. Yoon, J. E. Baek, S. T. kim, "Evaluation of GPR Application to Survey Utilities on Sidewalks", International Journal of Highway Engineering, Vol.21, No.1, pp.35-41, Jan. 2019. DOI: http://dx.doi.org/10.7855/IJHE.2019.21.1.035
  4. S. R. Beak, J. H. Kim, "A Study on the Improvement Method for Efficient Service of E-GENAED using Time and Spatial Data", Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, Vol.37, No.4, pp.253-265, Aug. 2019. DOI: https://doi.org/10.7848/ksgpc.2018.36.2.51
  5. S. H. Lee, I. H. Jang, "A Sudy on the Underground Condition of Road Using 3D-GPR Exploration", Journal of the Korean Geo-Environmental Society, Vol.20, No.2, pp.49-58, Feb. 2019. DOI: https://doi.org/10.14481/jkges.2019.20.2.49
  6. J. H. Choo, C. K. Yoo, Y. C. Oh, I. M. Lee, "Assessment of NATM tunnel lining thickness and its behind state utilizing GPR survey", Journal of Korean Tunnelling and Underground Space Association, Vol.21, No.5, pp.717-733, Sep. 2019. DOI: https://doi.org/10.9711/KTAJ.2019.21.5.717
  7. S. Y. Han, "Numerical Simulation of Ground-Penetrating Radar Signals for Detection of Metal Pipes Buried in Inhomogeneous Grounds", The Journal of Korean Institute of Electromagnetic Engineering and Science, Vol.29, No.1, pp.61-67, Jan. 2018. DOI: https://doi.org/10.5515/KJKIEES.2018.29.1.61
  8. J. H. Choi, J. H. Kim, "Spatial Information Data Topography Investigation of Land Characteristics", Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, Vol.37, No.6, pp.507-516, Dec. 2019. DOI: https://doi.org/10.7848/ksgpc.2019.37.6.507
  9. J. M. Oh, Y. H. Song, S. P. Hong, Y. M. Shin, Y. J. Ko, "High Definition Road Map Object usability Verification for High Definition Road Map improvement", Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, Vol.38, No.4, pp.375-382, Aug. 2020. DOI: https://doi.org/10.7848/ksgpc.2020.38.4.375
  10. Y. I. Chung, W. J. Park, B. I. Choi, "Technical Standard Analysis and Optimal Monitoring Technology to Prevent Ground Subsidence", Journal of The Korean Society of Hazard Mitigation, Vol.20, No.1, pp.307-317, Feb. 2020. DOI: https://doi.org/10.9798/KOSHAM.2020.20.1.307
  11. C. H. Jung, J. M. Kim, K. S. Kim, Y. S. Choi, "Improvement on Surveying Performance Evaluation for Public Surveying of Underground Facilities", Journal of the Korean Association of Geographic Information Studies, Vol.22, No.2, pp.15-23, Jan. 2019. DOI: https://doi.org/10.11108/kagis.2019.22.2.015
  12. Secsors & Software. products [Internet]. LMX200 [cited 2020 December 10], Available From: https://www.sensoft.ca/ko/products/lmx200/ (accessed Dec. 10, 2020)
  13. Ministry of Goverment Legislation. Regulation [Internet]. Public Survey Work Regulations [cited 2020 December 10], Available From: https://www.law.go.kr/ (accessed Dec. 10, 2020)