[논문]ODA사업을 통한 미계측 중소하천 유역 홍수예경보시스템 구축

고덕구; 이치헌; 전제복; 고석현

doi:10.3741/jkwra.2021.54.6.381

ODA사업을 통한 미계측 중소하천 유역 홍수예경보시스템 구축
Establishment of flood forecasting and warning system in the un-gauged small and medium watershed through ODA 원문보기

Journal of Korea Water Resources Association = 한국수자원학회논문집, v.54 no.6, 2021년, pp.381 - 393

고덕구 (동부엔지니어링) , 이치헌 (국립재난안전연구원) , 전제복 (동부엔지니어링 수자원환경부) , 고석현 (동부엔지니어링 수자원환경부)

초록
AI-Helper

국립재난안전연구원의 재난안전 신기술 공적개발원조(ODA) 사업의 일환으로 2019년 라오스 볼리캄싸이주 남싼강유역의 보리칸을 대상으로 홍수예경보시스템을 구축하였다. 미계측 중소하천유역인 대상 지역에 강우량와 유출량의 실시간 관측을 위한 관측소 및 경보국을 설치하였으며, 실시간 자료 관리와 홍수예경보 기능 등을 수행하는 소프트웨어도 개발되었다. 홍수경보 기준 설정 및 홍수예측을 위한 nomograph 개발을 위해 대상 지역의 30년 치 연도별 최대 일강우량자료와 하천측량성과를 바탕으로 수리·수문분석을 수행하였다. 본 논문은 시스템 구축 과정과 방법론을 소개하고, 시스템 설치 후 2020년 실시간 관측 수집된 자료들을 바탕으로 수행한 시스템의 적용성 검토 결과를 제시하였다.

Abstract ▼ AI-Helper

As part of the National Disaster Management Research Institute's Official Development Assistance (ODA) projects for transferring new technologies in the field of disaster-safety management, a flood forecasting and warning system was established in 2019 targeting the Borikhan in the Namxan River Basin in Bolikhamxai Province, Laos. In the target area, which is an ungauged small and medium river basin, observation stations for real-time monitoring of rainfall and runoff and alarm stations were installed, and a software that performs real-time data management and flood forecasting and warning functions was also developed. In order to establish a flood warning standard and develop a nomograph for flood prediction, hydraulic and hydrological analysis was performed based on the 30-year annual maximum daily rainfall data and river morphology survey results in the target area. This paper introduces the process and methodology used in this study, and presents the results of the system's applicability review based on the data observed and collected in 2020 after system installation.

주제어

표/그림 (22)

그림 Fig. 1. Location of Nam Xan River basin (source: Nations Online, 1998)
표 Table 1. Collected basic data of the target area
그림 Fig. 2. Locations of the observatories and warning posts
표 Table 2. General characteristics of the observatories and warning posts
그림 Fig. 3. Work flow for flood discharge estimation
표 Table 3. Probable rainfall intensity by duration of Namxan River Basin
그림 Fig. 4. Locations of JICA study area and target area on the isohyetal map of Laos (DMH, 2002)
그림 Fig. 5. Increasing trend of annual rainfall in Laos (World Bank Group, 2020)
표 Table 4. General characteristics of the sub-basins
표 Table 5. Estimated probable flood discharge of each control point
그림 Fig. 6. Extent of inundation analysis and boundary of 10yr flood risk area
표 Table 6. Estimated probable flood water level of each control point
표 Table 7. Comparison of estimated water levels by H-Q curve and HEC-RAS model at the Muang Kao station
그림 Fig. 7. Inundation depths by return periods calculated by 2D analysis
그림 Fig. 8. Baselines for flood warning
표 Table 8. Equipments of the hydrometic stations and warning posts
표 Table 9. Major functions and services of the flood forecasting and warning system
그림 Fig. 9. Observed 10 minutes rainfall and water level records in the database (Oct. 21, 2019 ~ Oct. 14, 2020)
표 Table 10. Database configuration information
그림 Fig. 10. Nomograph of rainfall-runoff-water level for flood forecasting
그림 Fig. 11. Observed hydrographs and comparison with predicted flood by nomograph at the control point (2020-08-01 10:00 ~ 2020-08-08 00:00)
표 Table 11. Probable rainfall and flow discharge at WL3 by critical duration rainfall (36 hrs.)

참고문헌 (14)

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Center for Research on the Epidemiology of Disasters (CRED) and United Nations Office for Disaster Risk Reduction (UNISDR) (2018). Economic losses, poverty & disasters: 1998-2017. Brussels, Belgium, pp.7-12.
Department of Meteorology and Hydrology (DMH) (2002). Water resources guide book of Lao PDR Vol. 1, Vientiane, Laos.
Government of Lao PDR (LAOS) (2011). Typhoon Haima in the Lao People's Democratic Republic. Joint Damage, Losses and Needs Assessment Report, Vientiane, Laos, p. 114.
Japan International Cooperation Agency (JICA) (2005). The master plan study on small-hydro in norther Laos: Volume 3 small-hydro manual. Final Report, Tokyo, Japan, pp. III-1-III-28.
Jeon, B.H. (2013), Application of the flood alert system in urban area. MS. Thesis, Dongseo University, pp. 40-56.
Ministry of Construction and Transportation (MOCT) and Han-River Flood Control Office (HFCO) (2005). Improvement of flood forecast program for major tributaries (summary report). Publication Registration Number: 11-1500407-0000025-01, GOVP 1200612360, pp. 113-143.
Ministry of Environment (ME) (2018). Enforcement regulations of the water resources investigation, planning, and management act [Attachment 1] criteria for issuing flood warning (related to Article 2(3)). National Law Information Center, accessed 1 November 2020, .
Ministry of Environment (ME) (2019). Standard guidelines for calculating flood volume. accessed 9 November 2019, .
Ministry of Land, Transport and Maritime Affairs (MLTMA) (2008). Guidelines on the cartography of flood risk maps. GOVP12009 46272, p.120.
National Disaster Management Research Institute (NDMI) (2019), Construction of forecasting and warning system for disaster risk reduction in Vietnam & Lao PDR -Lao PDR-. Final Report, Publication Registration Number 11-1741056-000159-01, pp. 3-6.
Nations Online (1998). Map of Laos, accessed 1 April 2021,
Thomisith, A. (2015). Laos flooding -10 villages underwater, World Vision responding, reliefweb, accessed 11 November 2020,
World Bank Group (2020). Climate Change Knowledge Portal, accessed on 1 November 2020,

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