• Title/Summary/Keyword: Urban Flood Disaster Prevention

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Development of Urban Flood Risk Maps for Strengthening Urban Planning Toward Disaster Prevention (재해예방형 도시계획 지원을 위한 도시침수 위험도 공간정보 개발)

  • Lee, Jongso;Lee, Sangeun
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.38 no.2
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    • pp.203-213
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    • 2018
  • This study aims to propose the methods for urban flood risk maps which are useful in strengthening urban planning toward disaster prevention by climate change. Selecting the Gwangju city, Gyeonggi-do as study area, it analyzes urban flood at a RCP 8.5 scenario, and develops gridded information regarding risk components such as hazard, exposure, and vulnerability. It turns out that flooding would occur at a bend interval of the Mokhyun stream and also at the joint of the Gyungan and the Mokhyun streams, showing the similarity with the inundation trace map. In particular, the Songjeong dong is analyzed to be seriously exposed and to be highly vulnerable to flood inundation. With all results together, this study concludes that the proposed methods could be used as a basis for strengthening urban planning toward flood disaster prevention system.

Research on Landscape Plan Strategy of Urban Waterside Space Buffer Zone - Focused on the Case of the Resilient Perspective of Plan - (도시 수변 완충지역의 경관 계획에 관한 연구 - 탄성 (resilient) 관점의 계획 사례분석을 중심으로 -)

  • Yang, Meng;Hong, Kwan-Seon
    • The Journal of the Korea Contents Association
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    • v.20 no.7
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    • pp.404-416
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    • 2020
  • Flooding is an unavoidable natural disaster for the city. Flood disasters seriously undermine the city's economy, safety, and sustained development. In the course of development and construction of waterfront space in the same city, the construction of basic disaster prevention facilities cannot be avoided completely even if huge amounts of capital are invested to reduce the economic damage of flooding. The cost of rebuilding the city after the disaster is much higher than the cost of building disaster prevention facilities. In recent years, the theory of elasticity in urban reconstruction and so on has been a subject of city problem solving, creating widespread discussion and attention in academia. In other words, how to transform the concept of elasticity into practice based on theoretical and empirical factors is a real problem facing urban disaster. Through theoretical literature on the waterfront (space) buffer zone of a city (flood-weak area) and the case study of the city's practice, this paper tries to clarify the element of 5R, the theory of elastomeric fire prevention, and present detailed measures accordingly. In addition, the following two problems are addressed while emphasizing the feasibility of implementing the urban waterfront (space) plan of the elastomeric element around the urban water buffer zone. First, the means of disaster prevention planning are used to mitigate conflicts between individual utility of urban waterfront and disaster prevention functions in waterfront buffer zones, and second, the waterfront buffer zone can respond to flood-causing problems in terms of disaster prevention as much as possible through the elastic disaster prevention plan.

The Analysis of Rainwater Storage Facility Project for the Urban Disaster Prevention in Busan and its Countermeasures (도시방재를 위한 부산지역 우수저류시설 설치사업의 분석과 대책)

  • Hwang, Jae-Yun
    • Tunnel and Underground Space
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    • v.25 no.1
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    • pp.37-45
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    • 2015
  • Recently, many cities have always been affected by large natural disasters such as floods and landslides. As climate change causes more frequent localized heavy rains exceeding the conveyance capacity of sewer, flood damage is expected to increase. For the sake of reducing the urban flood damage by changed rainfall, there has been many trials on installation of runoff-reducing facilities. Therefore, it was required to study about reasonable analysis and countermeasure of rainwater storage facility project for extending it. This study was to review the status of rainwater storage facility project for the urban disaster prevention in Busan, to find out problems, and to propose the countermeasure of rainwater storage facility project for the urban disaster prevention.

Nationwide Inundation Analysis method for Flood and Storm Disaster Insurance Rate (풍수해보험요율 산정을 위한 전국단위 내수침수해석 방안)

  • Yoo, Jaehwan;Song, Juil;Jang, Moonyup;Kim, Hantae
    • Journal of the Society of Disaster Information
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    • v.11 no.1
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    • pp.55-62
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    • 2015
  • This study suggested Nationwide Inundation Analysis method for Storm and Flood Damage Insurance Rate. Suggested modified Level-Pool method considers Zoning of urban plan to reflect real inundated area and limit inundation-boundary. Inundated area, as results of modified Level-Pool method, compared with inundation risk area on "storm and flood damage mitigation total plan". Simulated inundated area by modified Level-Pool method was more matched than results of traditional method. Therefore, modified Level-Pool method could be useful to analyze nationwide inundated area.

FFC2Q and XP-SWMM Comparative Study to Analyze Runoff Reduction by Urban Design Techniques (도시설계기법 유출저감 효과분석을 위한 FFC2Q와 XP-SWMM 비교 연구)

  • Song, Juil;Lee, ByoungJae;Yoo, Jaehwan
    • Journal of the Society of Disaster Information
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    • v.11 no.1
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    • pp.107-119
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    • 2015
  • The flood or inundation that occur in high-density city can paralyze urban functions and cause a lot of casualties. In this study, to minimize the damage, the disaster mitigating urban design techniques for the divided basin as disaster occurring point, disaster vulnerable site, urban responding region are applied. First of all, to do this, it is necessary to verify the effectiveness of urban design techniques by simulating them. Therefore, in this paper, the applicability of urban runoff models used in domestic disaster reduction study was investigated to analyze the outflow decrease efficiency of urban design techniques. As the reviewing results, the limitations of the lumped models such as FFC2Q and XP-SWMM are presented.