• 대한토목학회논문집
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• 제43권6호
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• pp.735-747
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• 2023

최근 기후변화로 인한 극한홍수 피해가 급증하고 있어 기존의 홍수관리시설만으로는 홍수피해에 제대로 대응하기 어려운 상황에 직면하고 있다. 이에 본 연구는 이러한 문제에 대처하기 위해 홍수 관리의 자연성 기반 접근 방법 중 하나인 제방 후퇴 및 이설의 효과를 분석하였다. 이를 위해 1차원 수치모델 HEC-RAS를 사용하여 100년 빈도 홍수에 대한 홍수위 및 유속 변화 그리고 최대 홍수위 발생 시점에 대해 분석하였다. 식생 조성 등의 자연성기반 홍수완충공간의 조성 환경 특성을 고려한 조도계수의 선택은 홍수위 변화 분석 결과에 민감하기 때문에 엄격한 기준과 과학적 근거를 기반으로 하였다. 분석결과, 자연기반해법의 홍수완충공간 조성에 따른 홍수위 저감 효과는 상류 구간에서 더 크게 나타났으며, 최대 30 cm의 홍수위가 저감되었다. 일부 홍수터 확장구간에서는 국부적으로 홍수위가 상승하는 현상이 나타나며, 유속 변화는 확장된 통수단면적의 비율에 따라 다양하게 나타났다. 이를 통해 제방 후퇴와 홍수터 확장은 홍수 관리의 효과적인 대안으로 고려될 수 있을 것으로 기대되며, 홍수위 변화, 유속 변화 및 최고 수위 발생 시점에 대한 종합적인 설계가 필요할 것으로 판단된다.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2007년도 정기총회 및 학술발표대회
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• pp.616-619
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• 2007

Recently, flood damage has been increased annually by severe rain storm and Typhoon. In this case, it needs to the effective flood management using not only hydrologic data but also numerical map, DEM(Digital Elevation Model), satellite image and so on. At this point in time, therefore, applying mobile GIS technology is expected to increase efficiency about the management of hydraulic structures and can promote LBS(Location Based Service) service for residents. In this study, the flood management technology using mobile GIS is suggested by standing on the basis of a super-highway information network.

• 한국농공학회논문집
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• 제48권2호
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• pp.27-35
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• 2006

Large dams are managed with operation standard and flood forecasting systems, while small dams do not have management method generally. Shortage of water resources and natural disasters due to drought and flood raised public concerns for management of small dams. Most of small dams are irrigation dams, which need diversified water uses. However, the lack of systematic management of small dams have caused serious water wastage and increased natural disasters. Storage management method and system were developed to solve these problems in small dams. The system was applied to Seongju dam for effective management. The storage management method was established considering hydrology simulation and statistical analysis using the system. This method can bring additional available water, even in the same conditions of the water demand and the supply conditions of watershed. It can improve the flood control capacity and water utilization efficiency by' the flexible operation of storage space.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2022년도 학술발표회
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• pp.160-160
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• 2022

Floods are the most common natural disasters and are annually causing severe destructions worldwide. Human activities, along with expected increased extreme precipitation patterns as a result of climate change enhance the future potential of floods. There are proven evidence that infrastructure based responses to flood disaster is no longer achieving optimum mitigation and have created a false sense of security. Nature-based solutions(NBS) is a widely accepted sustainable and efficient approach for disaster risk reduction and involves the protection, restoration, or management of natural and semi-natural ecosystems to tackle the climate and natural crisis. Adoption of NBS in decision-making, especially in developing nations is limited due to a lack of sufficient scenario-based studies, research, and technical knowledge. This study explores the knowledge gap and challenges on NBS adoption with case study of developing nation, specially for flood management, by the study of multiple scenario analysis in the context of climate, land-use change, and policies. Identification and quantification of the strength of natural ecosystems for flood resilience and water management can help to prioritize NBS in policymaking leading to sustainable measures for integrated flood management.

• 한국농공학회논문집
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• 제56권6호
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• pp.103-111
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• 2014

This study was to develop the flood analysis module (FAM) for implementation of a web-based real-time agricultural flood management system. The FAM was developed to apply for an individual watershed, including agricultural reservoir. This module calculates the flood inflow hydrograph to the reservoir using effective rainfall by NRCS-CN method and unit hydrograph calculated by Clark, SCS, and Nakayasu synthetic unit hydrograph methods, and then perform the reservoir routing by modified Puls method. It was programmed to consider the automatic reservoir operation method (AutoROM) based on flood control water level of reservoir. For a $15.7km^2$ Gyeryong watershed including $472{\times}10^4m^3$ agricultural reservoir, rainfall loss, rainfall excess, peak inflow, total inflow, maximum discharge, and maximum water level for each duration time were compared between the FAM and HEC-HMS (applied SCS and Clark unit hydrograph methods). The FAM results showed entirely consistent for all components with simulated results by HEC-HMS. It means that the applied methods to the FAM were implemented properly.

• 지질공학
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• 제10권2호
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• pp.36-51
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• 2000

우리나라는 매년 태풍, 호우 등 자연재해로 인하여 많은 피해가 발생하고 있다. 지난 10년간 피해현황을 살펴보면, 한해 평균 약 6,000 억원의 재산피해가 발생하고 잇으며 이러한 재산 피해의 대부분은 홍수로 인한 침수 및 유실에 의한 것이다. 이러한 홍수피해에 대한 대책을 수립하기 위해서는 피해발생 원인을 제대로 파악하여야 한다. 본 연구에서는 재해발생시 기상조건, 홍수범람 현상, 피해현황, 방재대책 등 용인을 중심으로 피해원인을 분석하기 위한 홍수재해 현장조사 방법에 대해 검토하였다. 비구조적 홍수대책의 하나인 침수실적도는 지자체에서 홍수에 취악한 지역의 개발을 제한하는 토지 이용 규제에 사용하기 위한 것이다. 따라서, 지자체에서는 침수실적도를 작성하여야 하며 이를 위해서는 먼저 침수실적도 작성 지침이 필요하다. 본 연구에서는 우리나라 특성에 맞는 침수실적도 작성 지침과 작성된 침수시적도를 관리할 수 있는 관리시스템을 개발·제시하였다.

• KIEAE Journal
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• 제10권4호
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• pp.9-17
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• 2010

The purpose of this study is to draw out objective bases for selecting various applicable facilities in case of the establishment of rainwater management strategies. To do so, sixteen facilities were selected from decentralized rainwater management systems that induce rainwater infiltration and detention as well as centralized end-of-pipe type infiltration and detention facilities in local areas. With these facilities, it attempted to evaluate them in terms of sustainability, pollutant elimination, flood control capacity and costs and subsequently analyzed correlations between each characteristic. The outcomes of the analysis were as follows: First was the analysis of characteristics between decentralized rainwater management systems and end-of-pipe rainwater management systems. From the decentralized rainwater management systems, the mulden-rigolen system and grass swale at street level had the highest in the total of the four items while the totals of the underground detention tank and temporary detention site were highest in end-of-pipe rainwater management systems. After analyzing the correlation between different types of facilities and each variable, it can be said that decentralized rainwater management systems have a higher correlation than end-of-pipe rainwater management systems in terms of sustainability whereas the latter are better in flood control capacity than the former. Second, the analysis of correlation in variables of each facility is as follows: first, there is a negative correlation between sustainability value and flood control capacity value; and there is a positive correlation between flood control capability and pollutants elimination. In addition, it revealed that the higher the flood control and pollutant elimination capability the higher the facility costs. Based on these assessments, it is possible to use them as objective selection criteria for facility application in case of site development project or complex plan.

• 토지주택연구
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• 제5권3호
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• pp.203-214
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• 2014

The purpose of this paper is to introduce two integrated urban development projects in Japan that take full advantage of flood-control reservoirs: the Tetsugakudo Park Collective Housing Development Project and the Koshigaya Lake Town Project. The former project - implemented cooperatively by the Tokyo metropolitan government in charge of river management, Shinjuku and Nakano wards (in Tokyo) responsible for park management, and the Urban Renaissance Agency, a housing project developer - set a significant precedent for three-dimensional river use by realizing the three-dimensional integrated development of a flood control reservoir, a park, and collective housing. The Koshigaya Lake Town Project, launched as a drastic storm water management measure for a low-lying area often plagued by flooding, has achieved a sustainable coexistence between the waterfront environment and the urban living environment, with an artificial flood-control reservoir as the core for urban development. This project is fully committed to environmental coexistence through the optimal use of local environmental resources, with the cooperation of the central government, Saitama Prefecture and Koshigaya City.

• 한국안전학회지
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• 제29권1호
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• pp.64-69
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• 2014

Community-based disaster preparedness approaches are increasingly important elements of vulnerability reduction and disaster strategies. They are associated with a policy trend that values the knowledge and capacities of local people. In this research, we describe the community diagnosis method and develop Flood Disaster Risk Reduction Index(FDRRI) for assessment of flood vulnerability. FDRRI is composed of four indicators such as Flood Exposure Indicator(FEI), Sensitivity Indicator(SI), Risk Reduction Indicator(RRI), and Community Preparedness Indicator(CPI). We anticipate to present the guideline for selection national preparedness projects and uplift community's preparedness capacity.

• 한국습지학회지
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• 제16권4호
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• pp.463-476
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• 2014

하천변에 위치한 하도습지는 치수사업을 통한 치수가치와 하도습지의 생태적 보전가치가 대립함으로써 사회적 갈등을 야기하고 있다. 본 연구에서는 하도습지의 치수가치와 생태가치에 대한 경제성 분석을 통해 두 가치 모두의 중요성을 확인하였으며, 이러한 결과를 바탕으로 치수안전과 생태보전을 고려한 하도습지 관리방안을 제시하고자 하였다. 이를 위해 다차원 홍수피해산정방법(MD-FDA)과 조건부가치측정법(CVM)을 이용하여 임진강 하구유역의 연평균 홍수피해액과 하도습지의 생태보전가치를 산정하였다. 분석결과, 임진강 하구지역은 치수사업도 필요하고, 하도습지의 생태적 보존가치 역시 중요하여 단계별 치수사업과 하도습지의 보호를 위한 관리방안 수립이 필요한 것으로 나타났다. 그 결과 임진강 하도습지는 지속적으로 퇴적이 발생하고 홍수위가 상승하는 지역으로 분류되었다. 이를 바탕으로 임진강 하구는 하천정비사업 시 치수안전과 생태보전을 함께 확인하며 진행하는 것이 필요하고, 생태계 교란을 최소화하기 위한 단계적인 하천정비시행이 바람직할 것으로 판단되었다. 본 연구에서 도출된 결과를 토대로 향후 치수사업과 하도습지의 보존을 함께 고려한 하천관리방안 수립을 위한 기초자료로 활용 될 수 있을 것으로 기대된다.