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The development of land use planning technique applying low impact development and verifying the effects of non-point pollution reduction : a case study of Sejong city 6 district

저영향개발(LID)을 적용한 토지이용계획 기법 개발 및 적용효과 분석 : 세종시 6생활권을 대상으로

  • Kang, Ki-Hoon (Department of Urban & Transportation Engineering, Kongju National University) ;
  • Lee, Kyung-Hwan (Department of Urban & Transportation Engineering, Kongju National University)
  • 강기훈 (공주대학교 도시.교통공학과) ;
  • 이경환 (공주대학교 건설환경공학부 도시.교통공학전공)
  • Received : 2016.11.25
  • Accepted : 2017.07.07
  • Published : 2017.07.31

Abstract

The aim of this study was to develop a low impact development design technique that can be applied in the land use planning stage and verify quantitatively the effects of non-point pollution reduction. For this purpose, the low impact development design elements that can be applied in the land use planning stage were derived and applied to an actual site, and the non-point pollution reduction effect was analyzed using the LIDMOD2 program. The analysis showed that the permeability rate of the land use plan using low impact development decreased by 19.8% compared to the existing land use plan. In addition, annual surface runoff decreased by 19.0% and annual infiltration increased by 164.1%. In the case of non-point pollution, the annual loading, T-N, T-P, and BOD decreased by 18.7 ~ 22.8%. Therefore, compared to the existing land use plan, the land use plan using low impact development has a considerably large effect of reducing the non-point pollution without changing the floor area according to each application. Therefore, to maximize the reduction effect of non-point pollution, it will be necessary to establish a related plan by applying the low impact development technique from the land use planning stage to the existing LID facility-oriented plan.

우리나라의 급속한 산업화는 도시침수, 하천 건천화, 지하수 고갈, 수질오염 등의 많은 문제를 야기하였으며, 최근 이에 대한 대안으로 저영향개발 기법이 제시되고 있다. 저영향개발 기법은 도시의 불투수 면적을 줄이고 녹지면적을 확보하여 자연 상태의 물순환체계를 구축하기 위한 도시개발 기법이다. 이에 본 연구는 토지이용계획 단계에서 적용가능한 저영향 개발 설계기술을 개발하고 비점오염 저감효과를 정량적으로 검증하는데 목적을 두고 연구를 진행하였으며 구체적으로는 토지이용계획 단계에서 적용가능한 저영향개발 설계요소를 도출하고 실제 대상지에 적용, 비점오염 저감효과를 LIDMOD2 프로그램을 이용하여 분석하였다. 분석결과 기존 토지이용계획안에 비해 저영향개발을 적용한 토지이용계획안의 경우 불투수율과 연간 표면 유출량은 각각 19.8%, 19.0% 감소하고, 연간 침투량은 164.1% 증가하는 것으로 나타났다. 비점오염 발생량의 경우 T-N, T-P, BOD 모두 18.7~22.8% 감소하는 것으로 나타났다. 따라서 저영향개발을 적용한 토지이용계획안은 기존 토지 이용계획안에 비해 각 용도별 연면적 변화 없이도 비점오염 저감효과가 상당히 큰 것으로 판단된다. 따라서 비점오염 저감효과를 극대화하기 위해서는 기존 LID시설 위주의 계획에서 나아가 토지이용계획 단계에서부터 저영향 개발기법을 적용하여 관련 계획을 수립할 필요가 있다.

Keywords

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