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Journal of the Korean Society of Hazard Mitigation 2004;4(2):1-12.
Published online June 30, 2004.
상류유역 개발에 따른 하류부 침수피해 영향 분석 - 영산강 유역을 중심으로 -
정재욱, 이재응, 김진영, 윤세의
An effect analysis of the lower basin floods due to the upper stream development in Youngsan River
Jae-Wook Jung, Jae-Eung Yi, Jin-Young Kim, Sei-Eui Yoon
Abstract
This study is a preliminary study to analyze flood effects of the lower basin due to upper stream development in Youngsan River. Floods case study due to land development was investigated. It used a probable rainfall and it investigated the change of flood discharge of the Youngsan River, Three heavy rain which occur recently from the Youngsan River basin is selected and the runoff characteristics against the rainfall is analyzed. If the urbanization speed of present time is advanced quickly from the upper stream development in Youngsan River, peak flow of the Youngsan River middle downstream are augmented, peak time are shortened and the damage of the inundation will be added an extra weight. In addition, floods materials were collected to analyze floods characteristics, and an establishment of countermeasures for flood prevention was suggested for Youngsan River
Key Words: Youngsan River basin; urbanization; peak flow; inundation damage
요지
본 연구에서는 영산강유역을 중심으로 상류유역 개발이 하류부 수해에 미치는 영향을 분석하였다. 확률강 우량을 사용하여 영산강 유역의 도시화에 따른 하류부 홍수량의 변화 추이를 검토하였으며, 영산강 유역에서 최근에 발생했던 호우 중 세 개를 선정하여 강우에 대한 유출 특성을 분석하였다. 그 결과, 영산강 상류지역에서 도시화가 현재의 속도대로 진행된다면 영산강 중 하류 지역의 첨두홍수량이 증대되고, 첨두유량 도달시간이 단축되어 침수 등의 피해가 가중될 여지가 있다고 판단된다. 영산강 유역 하류부 침수피해 최소화를 위한 수해자료 확보 및 방안을 제시하였다.
핵심용어: 영산강유역; 도시화; 첨두홍수량; 침수피해
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