• 한국환경복원기술학회지
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• 제9권3호
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• pp.1-16
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• 2006

The purpose of this study is to develop design model of ecological park as stormwater storage facilities. The results are as follows : First, the design model of ecological park as stormwater storage facilities consider ecological and landscape characteristics such as high efficiency of land use, function as disaster prevention, ecological water purification, formation of habitat for flora and fauna. Second, this study demonstrates two types of plane structure and eight types of designed section. They can be combined and designed depending on conditions of each site. The facilities of stormwater storage conduct disaster prevention system and ecological park. Retention pond in stormwater storage facilities for ecological park also should be made for ecological restoration in the site. Third, the ecological park provide the basis for ecological network from in-site to out-site. Therefore its conservation and restoration plan consider the ecosystems of the site. Fourth, the most important factor for maintenance and management for retention pond is keeping water quality. Sustainable Structured wetland Biotop system is suggested for ecological water purification system in the retention pond which is one of the constructed wetland system using multi-celled aquatic plant and pond. This system can also provide habitat for animals and plants, water friendly park for men, and beautiful landscape.

• 한국물환경학회지
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• 제29권1호
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• pp.45-54
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• 2013

This study analyzes the reduction effects of runoff and flood damage through different arrangements of stormwater storage facilities. Three scenarios based on the spatial allocation of storage capacity are used: concentrated, decentralized and combinative. The characteristics of runoff and flood damage by scenario are compared. The XP-SWMM model is used for runoff simulation by the probable rainfall of return period. The result shows that the concentrated arrangement of storage facilities is most effective to reduce the amount of peak flow and to delay the time of peak flow. Yet, while the concentrated arrangement is most effective to reduce the inundation damage, it is not effective to reduce runoff volume. The decentralized arrangement is most effective to reduce runoff volume. The combinative arrangement is effective not only the runoff reduction but also the reduction of flood damage. The result indicates that the flood mitigation strategies against heavy rainfall need to consider decentralized on-site arrangement for the reduction of runoff volume along with concentrated off-site arrangement of storage facilities.

• 한국방재학회 논문집
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• 제10권3호
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• pp.109-118
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• 2010

본 연구에서는 소규모 저류시설의 유출저감효과를 NRCS 유출곡선지수의 감소율로 정량화하였다. 저류시설로 유입되는 유출용적을 계산하기 위해 수정합리식을 이용하였다. 다양한 강우 특성(강우 빈도, 지속시간)과 저류시설의 규모에 따라 설치 전후의 NRCS 유출곡선지수 감소율을 정량화하였다. 마지막으로 저류시설의 규모에 따른 유출곡선지수의 감소율을 나타내는 도표를 개발하였다. 이 도표는 저류시설의 최적 위치 및 용량 결정을 할 경우 저류시설의 효율을 평가하는데 합리적이고 효율적으로 활용될 수 있을 것으로 기대된다. 본 연구에서 제안된 방법에 의한 결과는 또한 기존 연구와의 비교를 통해 검증하였다.

• 상하수도학회지
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• 제26권5호
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• pp.637-647
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• 2012

Recent series of flooding events in urban area has brought a growing concern on storage facilities as a major stormwater management method. The Korean Ministry of Environment has announced diverse plans to tackle the problem, including plans for multi-purpose storages which deal both the stormwater and wastewater. Even though storages can be categorized for different perspectives, classification of possible storages in urban area has not been throughly studied so far. This study investigated diverse references of urban storages and suggested systematic classifications on structural, functional and some other basis. Structural classification mainly concerns structural shape of facilities and includes (1)Cisterns & Rain barrels, (2)Forebays, (3)Dry basins, (4)Wet basins and (5)Constructed wetland. Those functions can be (1)flood prevention (2)water quality control and (3)reuse of stored water. Other criteria that categorize storages depend on (1)height, (2)location, (3)configuration, (4)depth, (5)site of the installation and (6)shape.

• Korean Journal of Hydrosciences
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• 제7권
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• pp.21-35
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• 1996

This Study is to develop the suitable hydrologic models for determination of the size and location of detention storage facilities to restrain stormwater runoff in urban areas. Hypothetical areas of two levels are considered to seize the hydrologic response characteristics. A one-square-kilometer ares is selected for the catchment level, and a 10-square-kilometer area consisting of 10 catchments is adapted at the watershed level as representative of urban drainage area. In this analysis, different rainfall freqyencies, land uses, drainage patte군, basin shates and detention storage policies are considered. Folw reduction effect of detention storage facilities is deduced from storage ratio and detention basin factor. A substantial saving in detention storage volumes is achieved 노두 the detention storage is planned at the watershed level rather than the catchment level. For the application of real watersheds, two watersheds in Seoul metropolitan area-Jamshil 2 and Seongnae 1-are selected on the basis of hydrologic response charactaristics. Through the regression analysis between dimensionless deterntion storage volume, dimensionless upstream area ratio and reduction rate of storage ratio, the regression equations to determine the size and location of detention storage faclities are presented.

• 물과 미래
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• 제28권3호
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• pp.159-173
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• 1995

본 연구는 도시화로 인해 야기되는 도시유역의 홍수재해를 경감시키기 위하여 우수유출억제대책으로 유역내의 일부에 지체저류시설을 설치하는 방안을 검토하는 것으로서, 도시화의 진전상태에 따라 도시유역의 수문응답특성을 파악하고 적정 지체저류시설의 위치와 크기를 결정하기 위해 유역면적이 각각 1$\textrm{km}^2$, 10$\textrm{km}^2$인 가상의 소유역 및 전유역과 실제 도시유역을 대상으로 해석하였다. 강우빈도, 토지이용단계, 배수패턴, 허용방류량의 규모에 대해 도시화의 진전상태에 따른 수문응답특성을 파악하였으며, 실유역으로는 서울특별시의 잠실 2 및 성내 1 유수지 배수구역을 선정하여 지체저류시설의 크기와 위치를 나타내는 회귀식을 유도하여 제시하였다.

• 한국습지학회지
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• 제23권1호
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• pp.74-84
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• 2021

도시 개발로 인한 영향을 최소화하여 물 순환 체계를 개선하기 위해서는 적극적인 강우유출수 관리가 필수적이다. 최근에는 도시의 강우유출수 관리를 위한 저영향개발(Low Impact Development, LID) 기법이 합리적인 대안으로 주목받고 있다. Storm Water Management Model(SWMM)은 LID 모듈을 통해 다양한 GI(Green Infra) 시설에 대한 모의 기능을 제공하고 있어 도시 물순환 개선 사업에 적극 활용되고 있다. 그러나 SWMM을 이용하여 GI 시설을 모의하기 위해서는 복잡한 유역 설정과 GI 시설 배치에 많은 어려움이 존재한다. 본 연구에서는 GI 시설의 핵심적인 수문 프로세스를 구현하면서도 상대적으로 간단하게 GI 시설의 성능을 평가할 수 있는 모형이 제안된다. 제안된 모형은 수문학적 추적을 기반으로 작동되므로 GI 시설의 침투, 저류, 증발산을 모두 반영할 수 있을 뿐만 아니라 GI 시설에 의한 도시 물순환 개선 효과를 정량적으로 평가할 수 있다. 제안된 모형의 결과와 SWMM의 결과를 비교함으로써 제안된 모형의 적용성을 검증하였다. 더붙여서 SWMM의 투수성 포장 모의에서 발생되는 오류에 대한 논의가 포함된다.

• 한국물환경학회지
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• 제23권4호
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• pp.490-497
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• 2007

A Combined sewer overflows (CSOs) are themselves a significant source of water pollution. Therefore, the control of urban drainage for CSOs reduction and receiving water quality protection is needed. Examples in combined sewer systems include downstream storage facilities that detain runoff during periods of high flow and allow the detained water to be conveyed by an interceptor sewer to a centralized treatment plant during periods of low flow. The design of such facilities as stormwater detention storage is highly dependant on the temporal variability of storage capacity available (which is influenced by the duration of interevent dry periods) as well as the infiltration capacity of soil and recovery of depression storage. As a result, a continuous approach is required to adequately size such facilities. This study for the continuous long-term analysis of urban drainage system used analytical probabilistic model based on derived probability distribution theory. As an alternative to the modeling of urban drainage system for planning or screening level analysis of runoff control alternatives, this model have evolved that offer much ease and flexibility in terms of computation while considering long-term meteorology. This study presented rainfall and runoff characteristics of the subject area using analytical probabilistic model. This study presented the average annual COSs and number of COSs when the interceptor capacity is in the range $3{\times}DWF$ (dry weather flow). Also, calculated the average annual mass of pollutant lost in CSOs using Event Mean Concentration. Finally, this study presented a decision of storage volume for CSOs reduction and water quality protection.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회 논문집
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• pp.1199-1203
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• 2005

Combined sewer overflows(CSOs) are themselves a significant source of water pollution. Therefore, the control of urban drainage for CSOs reduction and receiving water quality protection is needed. Examples in combined sewer systems include downstream storage facilities that detain runoff during periods of high flow and allow the detained water to be conveyed by an interceptor sewer to a centralized treatment plant during periods of low flow. The design of such facilities as stormwater detention storage is highly dependant on the temporal variability of storage capacity available(which is influenced by the duration of interevent dry periods) as well as the infiltration capacity of soil and recovery of depression storage. As a result, a contiunous approach is required to adequately size such facilities. This study for the continuous long-term analysis of urban dranage system used analytical Probabilistic model based on derived probability distribution theory. As an alternative to the modeling of urban drainage system for planning or screening level analysis of runoff control alternatives, this model have evolved that offer much ease and flexibility in terms of computation while considering long-term meteorology. This study presented rainfall and runoff characteristics or the subject area using analytical Probabilistic model. Runoff characteristics manifasted the unique characteristics of the subject area with the infiltration capacity of soil and recovery of depression storage and was examined appropriately by sensitivity analysis. This study presented the average annual COSs and number of COSs when the interceptor capacity is in the range 3xDWF(dry weather flow). Also, calculated the average annual mass of pollutant lost in CSOs using Event Mean Concentration. Finally, this study presented a dicision of storage volume for CSOs reduction and water quality protection.

• 한국습지학회지
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• 제21권2호
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• pp.181-190
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• 2019

최근 강우유출수를 비용효율적으로 관리하기 위해 저영향개발 (Low Impact Development, LID)과 자연기반해법(Nature-based solution, NBS)를 도입하고 있다. 본 연구에서는 LID 시설 중 도심지 내 적용가능하고 유입부에 침강지가 조성된 침투도랑(IT)과 소규모 인공습지(SCW) 등 2개의 시설에 대해 효율성을 평가하였다. 효율성 평가는 장기간의 모니터링을 통한 자료를 이용하여 수행하였다. 분석결과 하절기 기간은 식생의 흡입 등의 생물학적 활동으로 인하여 SCW의 효율이 더 높았으나, 동절기 기간에는 식물의 고사로 인하여 IT의 효율이 더 높은것으로 분석되었다. 침강지 내 퇴적물의 분석결과 SCW 침강지 내 식생에 의한 정화작용 및 미생물등의 생물학적 처리기작으로 인하여 COD와 TN의 저감효율이 높은것으로 분석되었다. 본 연구에서는 침강지 시설을 조성한 LID 시설에 대해 비교하였으며, 자연과 유사한 자연기반해법을 LID 시설에 적용할 경우 기존 시설보다 처리효율이 우수한것으로 나타났다.