• 제목/요약/키워드: Flood prevention

검색결과 354건 처리시간 0.037초

홍수량 할당과 거래제도에 관한 연구 (A Study on the Flood Quota and Trading System)

  • 김동엽;최영준
    • 자원ㆍ환경경제연구
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    • 제15권5호
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    • pp.939-959
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    • 2006
  • 본 연구는 효율적인 치수정책으로 홍수량 할당제도를 분석하였다. 현재 상 하류지역의 구조물적이고 비협조적인 홍수방어 체제는 유역 최적의 홍수방어 규모를 달성하지 못한다. 그러나 홍수량 할당제도와 거래제도의 도입은 효율적인 홍수방어규모를 달성하는 것으로 분석되었다. 지역별 홍수량 할당은 유역 전체의 홍수방어뿐만 아니라 지역별 사회 경제적 특성뿐만 아니라 지형적 특성을 고려하여 결정되어야 한다. 특히 효율적인 홍수방어를 위해서 홍수량 거래제도를 적극 도입할 필요가 있다.

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Assessment of Human Impact on Mekong River Flood by Using Satellite Nightlight Image

  • Try, Sophal;Lee, Giha;Lee, Daeeop;Thuy, HoangThu
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2016년도 학술발표회
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    • pp.187-187
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    • 2016
  • High intensity of population distribution in deltaic setting especially in Asia tends to have increased and causes coastal flood risk due to lower elevations and significant subsidence. Maximum or peak discharge of flood always causes numerous deaths and huge economic losses. New technology of spatial satellite image has been applied to analyze flood damage. In this research, the relationship of nightlight intensity associated with flood damages has been determined during 1992-2013 with spatial resolution of 30 arc sec ($0.0083^{\circ}$) which is nearly one kilometer at the equator in whole six countries along the Mekong River (i.e., China, Myanmar, Lao PDR, Thailand, Cambodia and Vietnam). ArcGIS Hydrological Flow Length Tool has been used to determine the distance of each pixel areas from the rivers and streams. Statistical analysis results highlight the significant correlation R = 0.47 between nightlight digital number and economic damages per unit area (US$/km2) and R = 0.62 for number of affected people for unit area ($people/km^2$). The areas near by the Mekong River and its tributaries correspond to high flood damage. This spatial analysis result is going to be prestigious key information to the regions and all related stakeholders for decisions and mitigation strategies.

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산악지역 돌발홍수 기준우량 결정에 관한 연구 (A Study on Flash Flood Warning Trigger Rainfall in Mountainous Area)

  • 전계원;오채연
    • 한국안전학회지
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    • 제24권1호
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    • pp.89-94
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    • 2009
  • The purpose of this study is to estimate the critical flood discharge and flash flood trigger rainfall for alarm system providing for a flash flood in mountainous area. The flash flood need non-linear approaching method, because rainfall-runoff is nonlinear and it is difficult to explain the existing linear rainfall-runoff. Hydrological characteristics would be utilized to apply such as hydrologic modelling or basin management. This study was effectively estimated a topographic characteristic factor of basin using the GIS. Especially, decided stream order using GIS at stream order decision that is important for input variable of GCIUH. A flash floods defined as a flood which follows shortly after a heavy or excessive rainfall event, with a few hours. In this study, we gave a definition that a critical flood for alarm is the flood when valley depth judging dangerous depth is over 0.5m depth from the bottom of channel. Result that calculate threshold discharge to use GCIUH, at the Mureung valley basin, flash flood trigger rainfall was 16.34mm in the first 20minutes when the threshold discharge was $14.54m^3/sec$.

기후변화에 따른 제주도의 홍수 취약성 평가 및 취약성 기반 소방 대응 활용 연구 (Study of a Flood Vulnerability Assessment for Climate Change and Utilizing the Vulnerability-based Disaster Response in Jeju-do)

  • 임채현;박용이
    • 한국화재소방학회논문지
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    • 제30권6호
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    • pp.64-70
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    • 2016
  • 본 연구에서는 VESTAP을 활용하여 기후변화에 따른 제주도의 홍수 취약성을 평가하였다. 평가결과, 제주도 홍수 취약성은 현재(2010년대)보다 미래(2020년대, 2030년대, 2040년대)로 갈수록 지속적으로 증가하는 추세를 보였으며, 특히 2030년대를 기준으로 이전에는 제주시의 취약성이 서귀포시보다 높게 나타난 반면, 이후에는 서귀포시의 취약성이 제주시보다 높게 나타나 제주도 전반에 대한 취약성의 증대와 함께 지형 상 남북 간인 서귀포시와 제주시 간의 취약성 변화 특성을 확인할 수 있었다.

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

  • Yoo, Jaehwan;Song, Juil;Jang, Moonyup;Kim, Hantae
    • 한국재난정보학회 논문집
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    • 제11권1호
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    • pp.55-62
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    • 2015
  • 본 연구에서는 풍수해보험요율 산정을 위한 전국단위의 내수침수해석 방안을 제시하였다. 제시된 수정 Level-Pool침수해석은 실제 침수피해지역을 반영하고 내수침수 발생 범위를 한정하기 위해 도시계획 용도지역을 고려하였다. 수정 Level-Pool침수해석에 의한 내수침수지역과 풍수해저감종합계획의 내수재해위험지구와 비교를 통해 적용성을 검토한 결과 기존 Level-Pool침수해석과 비교하여 내수침수지역이 내수재해위험지구를 더 정확하게 재현하는 것으로 나타났다. 따라서 전국단위의 내수침수위험지역을 해석함에 있어서는 본 연구에서 제안한 수정 Level-Pool침수해석이 활용 가능할 것으로 판단된다.

농경지 침수 피해 감소와 실시간 자료 수집을 위한 모바일 기반 정보 시스템 설계 (Mobile Application Design for Farmland Flooding Prevention and Realtime Data Collection)

  • 은상규;김태곤;이지민;서교;장민원
    • 농촌계획
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    • 제19권3호
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    • pp.1-12
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    • 2013
  • Climate change has increased the number of floods and inundation on farmland. Recently various mobile applications through inundation mapping, flood forecasts and evacuation routes have been developed for the prevention and reduction of flood damages. However, most of current prevention systems for farmland flooding are still web-based systems relying on the field survey which needs a lot of human and time resources although mobile devices has been rapidly improved and widely used. The purpose of this study is to design a mobile application for preventing and reducing farmland flood and inundation damages and collecting damage information in real time. We put advanced mobile device functions such as GPS, network communications, cameras into our system design. This system implement 2way communication and intuitive application that will increase information efficiency and decrease flood damage. Our design has been tested through previous flooding data of Jinju city in 2010.