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| 택지내 분산형 저류지 시스템의 첨두유출저감 및 생태환경효과 모니터링 |
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변찬우, 박현주, 이희창 |
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| A Monitoring of Reduction of Peak Runoff, Ecological and Environmental Effectiveness of Dispersal Detention System in Apartment Complex |
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Chan-Woo Byeon, Hyun-Joo Park, Hee-Chang Lee |
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| Abstract |
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This study is the evaluation and analysis on monitoring for reduction of peak runoff, ecological and environmental effectiveness of the dispersal detention system in the apartment complex that was made in the country for the first time. After ecological and environmental restorative construction the hydrological monitoring results showed the flood peak discharge of the ten-year period in Seoul area is reduced by 12% and show the lagged effect of 20 minutes. For ecological environmental waterway that was most concerned from the hydraulic point view, ecological wooden crib and natural stone work showed stability in order. For florae as ecological restoration effect, 11 families 15 species of Korean persicary, bulrush, Iris pseudoacorus L., reed, Phragmites japonica Steud. were dominant for flora species within the dispersal detention system and for faunas 3 families 4 species of endangered narrow-mouthed toad, Rana nigromaculata, Rana amuriensis coreana were found. BOD of inflow water purification effect was inflow concentration of 1.2 mg/l, outflow concentration of 0.7~0.8 mg/l, SS showed inflow concentration of 6.3 mg/l, outflow concentration of 5.0 mg/l as a results very clear water was monitored. |
| Key Words:
Dispersal detention; Sustainable structured wetland biotop; Reduction of peak runoff; Ecological and environmental restoration; Ecological water purification |
| 요지 |
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본 연구는 국내 최초로 조성된 분산형 생태환경저류지 시스템의 모니터링결과에 대한 집중호우 시 첨두유출저감과 생태환경 효과를 분석하고 평가하는 것이다. 생태환경복원시공 후 수리 수문모니터링 결과는 서울지역 재현기간 10년의 강우량과 홍수량에서 첨두유출량은 약 12% 감소하고, 20분의 지체효과를 보였다. 수리적으로 가장 우려되었던 생태환경수로는 생태목틀과 자연석의 순으로 그 안정성이 모니터링되었다. 생태복원효과로서 식물상의 경우, 저류지내 식재종은 총 11과 15종으로 정수식물 군락인 고마리, 부들, 노랑꽃창포, 갈대, 달뿌리풀 등이 우점하였으며, 동물상의 경우 양서류는 총 3과 4종으로, 멸종위기종인 맹꽁이, 참개구리, 청개구리, 한국산개구리 등 다양한 생물서식이 확인되었다. 유입수의 수질정화효과는 BOD의 경우 유입농도 1.2 mg/l, 유출농도 0.7~0.8 mg/l이었으며, SS는 유입농도 6.3 mg/l, 유출농도 5.0 mg/l로써 매우 맑은 물이 모니터링 되었다. |
| 핵심용어:
분산형 저류지; 생태적수질정화비오톱; 첨두유출저감; 생태환경복원; 생태적 수질정화 |
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