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Analysis of area-based optimal capacity design method in vegetation type LID

식생형 LID 시설에서 면적 기반의 적정 용량 설계 방법 연구

  • Park, Seowon (Department of Civil Engineering, Seoul National University of Science and Technology) ;
  • Gil, Kyungik (Department of Civil Engineering, Seoul National University of Science and Technology)
  • 박서원 (서울과학기술대학교 건설시스템공학과) ;
  • 길경익 (서울과학기술대학교 건설시스템공학과)
  • Received : 2017.03.14
  • Accepted : 2018.11.14
  • Published : 2018.11.30

Abstract

Recently, it has been reported that water pollution due to non-point pollutants continues. Studies have been actively carried out to prevent such non-point pollutants from flowing into the water system and to prevent water pollution. In this study, to evaluate the adequate design of the LID facilities the rainfall corresponding to 80% of the cumulative rainfall of Yongin city was applied to an SA / CA graph obtained from the analysis of monitoring results of the vegetation type LID facility. As a result, the appropriate SA/CA ratio was 0.6% for stormwater sustain efficiency 80% and the appropriate SA/CA ratio was 0.5% for TSS removal efficiency 80%. The appropriate SA/CA ratio of the vegetation type LID proposed in this study can be used as a basis. for the future vegetation type LID design. If more data of vegetation type LID are added through continuous research, it will be more accurate.

최근 비점오염 물질로 인한 수계 오염이 보고되고 있으며, 이러한 비점오염 물질에 의한 수계 오염을 방지하기 위한 연구가 활발히 수행되고 있다. 본 연구에서는 LID 시설의 적정 용량 설계 여부를 평가하기 위해 식생형 LID 시설의 모니터링 결과를 분석에서 얻은 SA/CA 그래프에 용인시의 누적강우량 80%에 해당하는 강우를 적용시켜 보았다. 분석결과, 누적강우량 80%에 해당하는 강우의 유량저감 효율 80%를 달성하기 위한 SA/CA 비율은 0.6%, TSS 제거효율 80%를 달성하기 위한 SA/CA 비율은 0.5%로 나타났다. 본 연구에서 제시한 식생형 LID 시설의 적정 SA/CA 비율은 향후 식생형 LID 시설 설계의 기초자료로 활용될 수 있으며, 지속적인 연구를 통해 더 많은 식생형 LID 시설의 데이터를 추가한다면 신뢰도를 높일 수 있을 것이다.

Keywords

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Fig. 1. Location information of monitoring area

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Fig. 2. Example of SA/CA graph

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Fig. 3. Cumulative rainfall curve in Yong-In city

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Fig. 4. Analysis of EMC of LID facilities

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Fig. 5. Surface area/Catchment area ratio curve each condition

HKSJBV_2018_v20n4_383_f0006.png 이미지

Fig. 6. Surface area/Catchment area ratio curve at efficiency 80%

Table 1. Specification of LID facilities in Yongin city

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Table 2. Characteristic of rainfall depth in each year

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Table 3. Cumulative rainfall depth information

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Table 4. TSS removal efficiency(EMC base)

HKSJBV_2018_v20n4_383_t0004.png 이미지

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