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Journal of the Korean Society of Hazard Mitigation 2015;15(5):291-299.
Published online October 31, 2015.
LID 기법 선정 및 적정규모 산정
이정민, 이윤상, 최종수, 강신욱
A Study on the Application and Effect Analysis Monitoring of LID Technique in New Town City (I)
Jungmin Lee, Yunsang Lee, Jongsoo Choi, Shinuk Kang
Abstract
With an increase in the impermeable areas being used for the construction of new town cities and urbanization, evapotranspiration and infiltration have decreased, while surface flow and non-point pollution loads have increased. As a solution to the adverse effects of development resulting from rapid urbanization, Low Impact Development(LID) techniques are being applied recently. In this study, the most suitable LID techniques were selected and an optimum area for their application was estimated in a new town city basin. The techniques such as the Infiltration Trench, Bio-retention, Tree box Filter, Artificial Wetland, and Porous Pavement were selected after reviewing the rainfall runoff management, LID techniques ability is to eliminate pollutants, and the condition of the soil in the study area. The optimum size was calculated using formulas(WQV, WQF) from various techniques, and the total LID area was calculated to be 80,300 m2. The methodologies used in this study for selecting the optimum LID techniques and calculating the optimum size are expected to present effective solutions in response to the recent natural disasters and climate changes, and contribute toward establishing future land use and rainfall management plans.
Key Words: Low Impact Development; LID Technique Selection; Optimum size; Monitoring
요지
신도시 건설로 인한 도시화로 분투수 면적이 크게 증가하면서, 증발산량과 지하침투는 감소하고 지표유출 및 비점오염부하는 증가하고 있는 실정이다. 이런한 도시화로 인한 개발의 악영향에 대한 최근 저영향개발(Low Impact Development; LID) 기법이 적용되고 있다. 본 연구에서는 연구대상 신도시 유역에 대한 최적 LID 기법의 선정과 적정규모를 산정하였다. 강우유출관리, 오염물질 제거 능력, 토양조건 등을 검토하여 침투도랑, 식생체류지, 나무여과상자, 인공습지 및 투수성 포장 등의 기법을 선정하였다. 본 연구에서 검토한 적정규모는 각각의 기법과 맞는 산정식(WQV, WQF)을 이용하였으며, 총 LID 면적은 80,300 m2으로 산정되었다. 본 연구에서 제시하는 LID 기법의 선정과 규모산정의 방법론은 최근 자연재해와 기후변화에 대응하여 효율적으로 미래의 토지이용 및 빗물 관리계획을 수립하는데 일조할 것이다.
핵심용어: 저영향개발; LID 기법 선정; 최적규모; 모니터링


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