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2025 Vol.24, Issue 4 Preview Page

Research Article

Assessment of the Applicability of a Net-Type Check Dam Equipped with an Early Warning Sensor System

조기경보용 센서 시스템이 적용된 네트형 사방댐의 적용성 평가

Jongju Kim1
,
Chanyoung Park2
,
Dabin Kwon3
,
YoungSeok Kim4
,
Seungjoo Lee5
,
Yongseong Kim6*
김 종주1
,
박 찬영2
,
권 다빈3
,
김 영석4
,
이 승주5
,
김 용성6*
1Member, Researcher, Korea Railroad Technical Corporation, Gwacheon-daero 7na-gil, Gwacheon-si, Gyeonggi-do 13840, Republic of Korea
2Member, Ph.D Candidate, Department of Regional Infrastructure Engineering, Kangwon National Univ., 1 Kangwondaehak-gil, Chuncheon, Gangwon-do 24341, Republic of Korea
3Member, Master’s Student, Department of Regional Infrastructure Engineering, Kangwon National Univ., 1 Kangwondaehak-gil, Chuncheon, Gangwon-do 24341, Republic of Korea
4Member, Senior Research Fellow, Department of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyang-daero, Ilsanseo-gu, Goyang-si, Gyeonggi-do 10223, Republic of Korea
5Member, Researcher, Korean Peninsula Infrastructure Research Center, Department of Construction Policy Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyang-daero, Ilsanseo-gu, Goyang-si, Gyeonggi-do 10223, Republic of Korea
6Member, Professor, Department of Regional Infrastructure Engineering, Kangwon National Univ., 1 Kangwondaehak-gil, Chuncheon, Gangwon-do 24341, Republic of Korea
*Corresponding Author
30 December 2025. pp. 75-86
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Abstract

This study was conducted to evaluate the practical applicability of an early warning sensor system for net-type check dams. A strain gauge was installed on the wire ropes of the net structure at the Umyeonsan check dam site, enabling real-time measurement of micro-displacements caused by debris-flow impacts. A monitoring system was established to transmit the measured data to a management server through an IoT-based communication network. Tensile tests were performed to verify the accuracy and reliability of the sensor, and field application results showed that even minor impacts were clearly detected, demonstrating the feasibility of real-time impact load monitoring. Based on the measured displacement and load data, the applicability of a multi-level warning system was examined, indicating that the proposed approach can enhance integrated response capabilities compared to conventional systems where protective structures and warning functions operate separately. This study provides fundamental data for introducing an early warning function to net-type check dams and is expected to contribute to improving initial response to debris-flow events.

Keywords
Debris Flow
Net-type check dam
Early warning system
Real-time monitoring

본 연구는 네트형 사방댐에 적용 가능한 조기경보용 센서 시스템의 실효성을 확인하기 위해 수행되었다. 우면산 사방댐을 대상으로 네트 구조물의 와이어로프에 변형률계를 설치하였으며, 토석류 충격에 따른 미소 변위를 실시간으로 측정하고 IoT 기반 통신망을 통해 관리 서버로 전송하는 모니터링 체계를 구축하였다. 인장실험을 통해 센서의 측정 정밀도와 신뢰도를 검증하였으며, 현장 적용 결과 작은 충격에도 변위 변화가 명확하게 계측되어 실시간 하중 모니터링이 가능함을 확인하였다. 또한 계측된 변위·하중값을 기반으로 단계별 경보 설정 가능성을 검토하여, 방호시설과 경보 체계가 분리되어 있던 기존 시스템 대비 통합 대응 기능을 강화할 수 있음을 제시하였다. 본 연구는 네트형 사방댐에 조기경보 기능을 도입하기 위한 기초자료를 제공하며, 향후 토석류 발생 초기 대응을 개선하는 데 활용될 수 있을 것으로 판단된다.

References
1

Kim, S. T. and Yoo, H. K. (2018), “Estimation of Anchor Capacity According to Impact Energy on Net Protection System for Debris Flow”, The Magazine of the Korean Society of Hazard Mitigation, Vol.18, No.2, pp.155-166.

10.9798/KOSHAM.2018.18.2.155
2

Kim, Y. S. (2020), “Development of IoT based landslide forecasting and warning system”, National R&D Research Report.

3

Korea Forest Service (KFS) (2024), “Number and proportion of landslides occurring outside designated landslide-prone areas over the past five years”, National Assembly Audit Briefing Material (Oct. 9, 2024), Republic of Korea (in Korean).

4

Korea Institute of Construction Technology (KICT) (2013), “The damage reduction strategy for the types of landslide and debris flow”, National R&D Research Report.

5

Li, X., Zhao, J. and Kwan, J. S. (2020), “Assessing debris flow impact on flexible ring net barrier : A coupled CFD-DEM study”, Computers and Geotechnics, Vol.128, p.103850.

10.1016/j.compgeo.2020.103850
6

Vicari, H., Ng, C. W., Nordal, S., Thakur, V., De Silva, W. R. K., Liu, H. and Choi, C. E. (2022), “The effects of upstream flexible barrier on the debris flow entrainment and impact dynamics on a terminal barrier”, Canadian Geotechnical Journal, Vol.59, No.6, pp.1007-1019.

10.1139/cgj-2021-0119
7

Xiong, Z., Chen, X. Q. and Chen, J. G. (2023) “Control and Interception Characteristics of the Debris-Flow Flexible Net Barrier Based on Orthogonal Design”, Water, Vol.15, No.10, p.1809.

10.3390/w15101809
8

Yoo, K. T., Kim, J. R. and Jang, S. H. (2016), “Research Trends on Monitoring Systems for Debris-Flow Detection in Switzerland”, The Magazine of the Korean Society of Hazard Mitigation, Vol.68, pp.46-50.

Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 24
  • No :4
  • Pages :75-86
  • Received Date : 2025-11-18
  • Revised Date : 2025-12-14
  • Accepted Date : 2025-12-23
  • DOI :https://doi.org/10.12814/jkgss.2025.24.4.075
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