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트램 설계시 LID 기법 적용을 통한 환경편익 증대 방안

Enhanced Method for Environmental Benefit via Application of Low Impact Development (LID) Technique in Tram Design

  • Gu, Su-Hwan (Daelim Industrial Co., Ltd.) ;
  • Lee, Yunhee (Department of Railroad Construction System, Woosong University) ;
  • Oa, Seong-Wook (Department of Railroad Construction System, Woosong University)
  • 투고 : 2016.12.07
  • 심사 : 2016.12.19
  • 발행 : 2016.12.31

초록

트램 건설시 LID 기법 적용에 따른 환경편익 증대 방안으로 경제성 평가에서 온실가스 저감에 따른 환경편익을 계량화하였다. 또한 LID 기법 중 침투형 투수블록 적용에 따른 도시물순환 효과를 정책성 분석시 사업특수 평가항목으로 선택할 수 있는지 여부에 대한 가능성에 대해서도 검토하였다. 투수잔디블록의 사용에 따른 콘크리트 궤도 대비 탄소배출 비율은 잔디 피복율(100%, 50% 화강석, 50% HDPE)에 따라 각각 -184.7%, -127.3%, -116.3%로 산출되었으며, 투수블록의 경우에는 화강석 및 HDPE 각각 30.1%, 52.5%로 산출되었다. 침투형 투수블록을 적용할 경우 강우강도 90mm/hr까지 저수가 가능한 것으로 나타났으며(저수율 94.3%), 도시물순환 시스템으로써 효과가 있을 것으로 판단된다. 결과적으로 트램건설시 LID 기법 적용으로 환경편익의 증대가 기대되며 추후 AHP 분석에서 정책적 요소로도 다루어질 필요가 있다.

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