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2019 Vol.6, Issue 2 Preview Page

Original Article

Experimental Study on Levee Monitoring System for Abnormality Detection Using Fiber Optic Temperature Sensing

광섬유 온도 센싱을 활용한 제방의 이상 감지 모니터링 시스템에 대한 실험 연구

Myeonghui Ahn1
,
Dongwoo Ko2
,
Un Ji3,4*
,
Joongu Kang5
안 명희1
,
고 동우2
,
지 운3,4*
,
강 준구5
1Budding Researcher, Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology, Goyang-Si, Korea
2Head Researcher, Nature and Technology Inc., Yecheon-gun, Korea
3,4Senior Researcher, Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology, Goyang-Si, Korea, Associate Professor Department of Smart City and Construction Engineering, Korea University of Science and Technology
5Research Fellow, Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology, Goyang-Si, Korea
1한국건설기술연구원 국토보전연구본부 신진연구원
2주식회사 자연과기술 책임연구원
3,4한국건설기술연구원 국토보전연구본부 수석연구원, 과학기술연합대학원대학교 스마트시티･건설융합(건설환경공학) 부교수
5한국건설기술연구원 국토보전연구본부 연구위원
* Corresponding Author
30 June 2019. pp. 120-127
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Abstract

Medium-scale levee experiments were performed to monitor the infiltration and failure of levee body by applying fiber optic temperature sensing. In this study, bio-polymer soil was spread in the levee slope to increase the strength and intensity. Therefore, the infiltration and failure by overflows were produced in a different way compared to general soil type of levees. This was also observed in the experiment data for temperature changes monitored by fiber-optic distributed temperature sensing system. Through the analysis of temperature changes at specific location by time, the location and initiation time for physical changes and infiltration in levee body could be identified based on temperature variation. In this experiment, the time of rapid changes in temperature was ahead in the inland slope rather than the forceland slope. It was corresponding to the levee failure sequence of first inland slope failure and then the forceland slope failure.

Keywords
Abnormality Detection
Distributed Temperature Sensing
Fiber Optic Temperature Sensing
Levee Experiment
Levee Monitoring

본 연구에서는 광섬유 온도 분포 센싱을 통한 제체의 침투 및 붕괴와 같은 물리적 변화 현상을 모니터링하기 위해 중규모 제방 수리실험을 수행하였다. 본 실험의 중규모 실험 제방은 바이오폴리머 흙을 제방 전면에 도포하여 강도를 증진시킨 것으로 월류에 의한 침투 및 붕괴 현상이 일반 제방과는 다르게 나타날 수 있으며, 이러한 현상은 광섬유 온도 분포 센싱을 통해 획득한 온도 변화 정보를 통해 분석할 수 있었다. 제체의 위치별 시간에 따른 온도 변화 자료를 통해 제체 내부의 물리적 변화 및 침투가 발생하는 위치와 시간을 판단할 수 있었다. 본 실험에서는 급격한 온도 변화 시점이 제외지 사면보다 제내지 사면에서 먼저 발생하였으며, 이는 실험에서 제내지 사면이 붕괴된 후에 제외지 사면이 붕괴된 순서와 일치하였다.

키워드
이상 감지
분포형 온도 센싱
광섬유 온도 센싱
제방 실험
제방 모니터링
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Schenato, L. 2017. A review of distributed fibre optic sensors for geo-hydrological applications. Applied Sciences 7:896.
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Su, H., Ou, B., Yang, L. and Wen, Z. 2018. Distributed optical fiber-based monitoring approach of spatial seepage behavior in dike engineering. Optics and Laser Technology 103: 346-353.
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1
Brown, R.G. 1963. Smoothing, Forecasting and Prediction of Discrete Time Series. https://books.google.co.kr/ books?id=JnZjNAEACAAJ. Accessed 14 June 2019.
2
Danka, J. and Zhang, L.M. 2015. Dike failure mechanisms and breaching parameters. Journal of Geotechnical and Geoenvironmental Engineering 141: 04015039.
10.1061/(ASCE)GT.1943-5606.0001335
3
Hanson, G.J., Cook, K.R. and Hunt, S.L. 2005. Physical modeling of overtopping erosion and breach formation of cohesive embankments.. Transactions of the ASAE 48: 1783-1794.
10.13031/2013.20012
4
Kim, J.M. and Moon, I.J. 2017. Analysis of River Levee Failure Mechanism by Piping and Remediation Method Evaluation. Journal of the Korea Academia-Industrial cooperation Society 18: 600-608. (in Korean)
10.5762/KAIS.2017.18.1.310
5
Kim, J.M., Park, M.C., Moon, I.J. and Jin, Y.H. 2017. Model Tests for Examination of Overflow Failure Mechanism on River Levee Journal of the Korean Geosynthetics Society 16: 41-52. (in Korean)
10.12814/jkgss.2017.16.1.041
6
Kim, J.Y., Song, Y.H. and Kim, Y.S. 2007. A Study on the Comparison between an Optical Fiber and a Thermal Sensor Cable for Temperature Monitoring. Journal of the Korean Geotechnical Society 23: 15-24. (in Korean)
7
Kim K.S., Bae D.S. Koh Y.K. and Kim J.Y. 2009. Monitoring System of Rock Mass Displacement and Temperature Variationfor KURT using Optical Sensor Cable. The Journal of Engineering Geology 19: 63-70. (in Korean)
8
KICT 2004. Development of Advanced Technologies for Levees. Korea Institute of Civil Engineering and Building Technology. (in Korean)
9
Ko, D. and Kang, J. 2018. Experimental studies on the stability assessment of a levee using reinforced soil based on a biopolymer. Water 10: 1059.
10.3390/w10081059
10
Lee J. 2011. Damage Detection Method for Structures Using Distributed Fiber Optic Sensor and Strain Mode. Journal of the Architectural Institute of Korea 27:47-54. (in Korean)
11
Mohamed, M.A.A., Morris, M., Hanson, G.J. and Lakhal, K. 2004. Breach Formation: Laboratory and Numerical Modeling of Breach Formation. Association of State Dam Safety Officials: Dam Safety, Phoenix, Arizona, USA.
12
Sasaki, Y., Towhata, I., Miyamoto, K., Shirato, M., Narita, A., Sasaki, T., and Sako, S. 2012. Reconnaissance report on damage in and around river levees caused by the 2011 off the Pacific coast of Tohoku earthquake. Soils and Foundations 52: 1016-1032.
10.1016/j.sandf.2012.11.018
13
Schenato, L. 2017. A review of distributed fibre optic sensors for geo-hydrological applications. Applied Sciences 7:896.
10.3390/app7090896
14
Sekuła, K., Połeć, M. and Borecka, A. 2018. Innovative solutions in monitoring systems in flood protection In: E3S Web of Conferences. EDP Sciences, 01005.
10.1051/e3sconf/20183001005
15
Su, H., Ou, B., Yang, L. and Wen, Z. 2018. Distributed optical fiber-based monitoring approach of spatial seepage behavior in dike engineering. Optics and Laser Technology 103: 346-353.
10.1016/j.optlastec.2018.01.048
16
Van Baars, S. and Van Kempen, I.M. 2009. The causes and mechanisms of historical dike failures in the Netherlands. Official Publication of the European Water Association.
17
Wang, Z., Zhao, B. and Royal, A.C.D. 2017. Investigation of Erosion of Cement-Bentonite via Piping. Advances in Materials Science and Engineering 2017:1762042.
10.1155/2017/1762042
Information
  • Publisher :Korean Society of Ecology and Infrastructure Engineering
  • Publisher(Ko) :응용생태공학회
  • Journal Title :Ecology and Resilient Infrastructure
  • Journal Title(Ko) :응용생태공학회 논문집
  • Volume : 6
  • No :2
  • Pages :120-127
  • Received Date : 2019-06-17
  • Revised Date : 2019-06-25
  • Accepted Date : 2019-06-25
  • DOI :https://doi.org/10.17820/eri.2019.6.2.120
Journal Informaiton Ecology and Resilient Infrastructure Ecology and Resilient Infrastructure
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