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Journal of the Korean Society of Hazard Mitigation 2015;15(5):301-310.
Published online October 31, 2015.
LID 시설 효과분석 모니터링
이정민, 이윤상, 김영철, 김이형
A Study on the Application and Effect Analysis Monitoring of LID Technique in New Town City (II)
Jungmin Lee, Yunsang Lee, Youngchul Kim, Leehyung Kim
Abstract
To prevent indiscriminate urbanization, Low Impact Development(LID) practices are being followed. LID is a management technique that enables processes such as, rainwater infiltration, retention, and evaporation to occur as they did in the natural state before development as far as possible. In this study, a test bed was constructed at each individual LID facility built at the study area for monitoring outflow and non-point pollution reduction effect analysis. The monitoring results showed the removal efficiency to eliminate pollutants such as nutrition to be good. In terms of TSS, a high removal efficiency of 57~100% was observed. Furthermore, the amount of annual retention of rainfall at each LID facility was analyzed, showing the accumulated rainfall to be in the range of around 220~580 mm per year. The results obtained from the monitoring and reduction effect analyses conducted at the LID facilities can be utilized as the basis for establishing a future plan for efficient land use and rainfall management in response to the recent natural disasters and climate changes.
Key Words: Low Impact Development; LID Practice facilities; Effect Analysis Monitoring
요지
최근 무분별한 도시화를 방지하기 위하여 저영향개발(Low Impact Development; LID) 기법을 적용하고 있으며, LID기법은 개발이전의 자연상태에 최대한 근접하는 빗물침투와 저류, 증발이 이루어지도록 관리하는 방법이다. 본 연구에서는 연구대상유역에 설계된 개별 LID 시설에 대해 테스트베드적용과 실험을 통한 모니터링 및 유출 및 비점저감효과를 분석하였다. 모니터링 결과, 영양염류 등 오염물질의 제거 효율이 좋은 것으로 나타났으며, TSS의 경우 57~100% 높은 저감효율을 보였다. 또한 LID 시설별 연간 저류량을 분석하였으며, 년간 차집 가능한 누적강우량은 약 220~580mm의 범위로 나타났다. 개별 LID 시설에 대한 모니터링과 효과분석 결과는 최근 자연재해와 기후변화에 대비하여 효율적으로 미래의 토지이용 및 빗물관리계획을 수립하는데 기본자료로 활용할 수 있다.
핵심용어: 저영향개발; LID 시설; 효과분석 모니터링


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