Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Characteristics of Stormwater Runoff with respect to Pavement Types

도로 포장방법에 따른 비점오염물질 유출특성 비교

  • Kim, Cheolmin (Dept. of Civil & Environ. Engg., Kongju National University) ;
  • Choi, Jiyeon (Dept. of Civil & Environ. Engg., Kongju National University) ;
  • Lee, Jung Min (Dept. of Urban Environ. Research, Korea Land & Housing Institute, Korea Land & Housing Corporation) ;
  • Cho, Hyejin (Highway & Transportation Research Division SOC Research Institute, Korea Institute of Construction Technology) ;
  • Kim, Lee-Hyung (Dept. of Civil & Environ. Engg., Kongju National University)
  • 김철민 (공주대학교 건설환경공학부) ;
  • 최지연 (공주대학교 건설환경공학부) ;
  • 이정민 (한국토지주택공사 토지주택연구원 도시환경연구실) ;
  • 조혜진 (한국건설기술연구원 SOC성능연구소 도로교통연구실) ;
  • 김이형 (공주대학교 건설환경공학부)
  • Received : 2014.06.05
  • Accepted : 2014.07.28
  • Published : 2014.08.31
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Abstract

Due to high imperviousness rates of the roads, various pollutants originated from vehicle activities and air depositions are accumulated on the road surfaces. The washed-off pollutants can deteriorate the water quality and destroy the aqua-ecosystems with their toxicity. Usually the roads are paved with asphalt and concrete, which can affect on the pollutant concentrations with different frictional forces. Therefore, this research is performed to evaluate the influences of different pavement type on discharged concentrations of pollutant. The results shows the first flush phenomenon was occurred on both pavement types. However, peak concentrations are higher in concrete pavement areas than asphalt pavement because concrete pavement has high contact area with vehicles. The EMCs(Event Mean Concentration) also shows high values in concrete paved roads. As a result of this research, it can be concluded the pavement type is also one of the important affecting factors on pollutant emissions from the roads.

도로는 높은 포장율과 자동차 운행으로 인하여 건기시 다양한 오염물질이 축적되며, 강우시 유출되어 수계에 환경수리학적 영향을 끼친다. 특히 도로노면은 아스팔트 또는 콘크리트로 포장되면서 거친 정도에 의한 오염물질의 축적과 유출정도가 다르다. 따라서 본 연구는 포장 재료에 따른 강우시 비점오염물질 유출특성을 분석하기 위하여 2012년도에 신규 개통한 구간에서 모니터링이 수행되었다. 강우 초기에 비점오염물질이 집중적으로 유출되는 초기강우현상은 포장재료와 관계없이 발생되는 것으로 나타났다. 그러나 노면과 자동차 타이어와의 마찰력이 큰 콘크리트 포장에서는 모든 수질오염항목에서 첨두농도가 높게 나타났다. 이러한 영향으로 인하여 TSS, 유기물과 영양염류의 유량가중평균농도(EMC, Event Mean Concentration)도 콘크리트 포장에서 높게 나타났다. 본 연구결과는 도로 포장방법이 수문학적 유출특성, 도로의 물리적 디자인 및 자동차의 운행대수 등과 함께 오염물질 유출에 크게 영향을 끼치는 중요한 인자라는 것을 보여준다.

Keywords

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