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2020 Vol.7, Issue 3 Preview Page

Original Article

Large-scale Levee Monitoring Experiment Using Fiber-optic Sensor and Distributed Temperature Sensing System

광섬유 센서와 분포형 온도 센싱 시스템을 이용한 실규모 제방 모니터링 실험

Myeonghui Ahn1
,
Inhyeok Bae2
,
Un Ji34*
,
Joongu Kang3
안 명희1
,
배 인혁2
,
지 운34*
,
강 준구3
1Budding Researcher, Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Korea
2Ph.D. Student, Department of Civil and Environmental Engineering, Korea University of Science and Technology, Daejeon 34113, Korea
3Research Fellow, Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Korea
4Associate Professor, Department of Civil and Environmental Engineering, Korea University of Science and Technology, Daejeon 34113, Korea
1한국건설기술연구원 국토보전연구본부 신진연구원
2과학기술연합대학원대학교 건설환경공학 박사과정
3한국건설기술연구원 국토보전연구본부 연구위원
4과학기술연합대학원대학교 건설환경공학 부교수
* Corresponding Author
30 September 2020. pp. 181-188
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Abstract

In this study, a temperature distribution sensing method using optical fiber was applied to a large-scale levee experiment, and the applicability of wide-area levee or embankment monitoring technology to observe the changes inside the levee was reviewed. The optical fiber was buried in a large-scale levee, and the temporal and spatial temperature changes were measured according to the water level changes in the reservoir. As the water level of the reservoir increased, the temperature of the embankment slope decreased, and as the infiltration progressed, a change in the spatial location of the temperature change was detected. The temperature change due to embankment infiltration varied depending on the time of the infiltration progress, and the change assumed to be the seepage line could be observed. This study has demonstrated that information about temperature changes inside the levee can be interpreted as the information on the locations that are judged to be relatively vulnerable, investigating the changes in the condition inside the levee.

Keywords
Distributed temperature sensing
Fiber optic temperature sensing
Large-scale levee experiment
Levee monitoring technique

본 연구에서는 광섬유를 활용한 온도분포 센싱 방법을 실규모 제방 실험에 적용하여, 제방의 사면과 제체 내부의 변화를 모니터링하는 광역형 제방 모니터링 기술의 적용성을 검토하였다. 실규모 제방에 광섬유를 매립하고 저류지의 수위 변화에 따른 제체 내부의 시간적, 공간적 온도 변화를 측정하였다. 저류지 수위가 증가함에 따라 제방 사면의 온도는 감소하였으며, 침투가 진행되면서는 온도 변화가 나타나는 공간적 위치의 변화가 감지되었다. 제방 침투로 인한 온도 변화는 침투 경과 시간에 따라 차이가 나타났고, 침윤선으로 추정되는 변화를 관찰할 수 있었다. 본 연구를 통해 제방 내부의 온도 변화에 대한 정보는 제방 내부의 상태 변화를 판단하고 상대적으로 취약하다고 판정되는 지점에 대한 정보로 해석될 수 있음을 증명하였다.

키워드
분포형 온도 센싱
광섬유 온도 센싱
실규모 제방 실험
제방 모니터링 기법
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Information
  • Publisher :Korean Society of Ecology and Infrastructure Engineering
  • Publisher(Ko) :응용생태공학회
  • Journal Title :Ecology and Resilient Infrastructure
  • Journal Title(Ko) :응용생태공학회 논문집
  • Volume : 7
  • No :3
  • Pages :181-188
  • Received Date : 2020-09-02
  • Revised Date : 2020-09-13
  • Accepted Date : 2020-09-14
  • DOI :https://doi.org/10.17820/eri.2020.7.3.181
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