• 대한공간정보학회지
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• 제6권2호
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• pp.69-79
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• 1998

현대사회는 도로, 상 하수도, 가스, 전화 등 여러 가지 사회기반시설물의 효율적 관리가 필수적이다. 그 중에서도 하수도시설은 지역 주민의 생활환경보호와 공공수역의 수질 보전을 위하여 가능한 최적의 상태로 관리되어야 한다. 기존의 일부 지자체 및 기업체에서는 이러한 하수도시설물을 효율적으로 관리할 수 있도록 하수관리시스템을 개발하여 사용하고 있다. 이러한 시스템의 제약점은 관망의 관리기능만을 제공할 뿐 관망에 부하되는 하수량에 대한 분석기능은 제공치 않으며, 일부 제공된 분석기능은 모든 관거를 획일적인 조건에서 분석하는 관계로 실제업무의 적용에는 현실적으로 타당치 않은 실정이다. 따라서 이번 연구에서는 이러한 하수시설물에 대한 관망분석을 도시계획도를 기본으로 용도지역별 특성에 따라 조건을 달리하여 분석할 수 있는 시스템을 개발하였다. 본 시스템은 각각의 하수관에 부하되는 하수량을 파악학 수 있음은 물론 우수량의 변화 및 인구밀도의 변화에 따라 부하되는 하수량의 변화에 대한 모의실험의 지원과 도시의 팽창 및 신도시의 건설에 따른 하수도 시설설계에 대한 의사결정을 지원할 수 있도록 하였다. 이러한 본 연구의 결과물은 통수능 부족관거의 검색을 통하여 민원발생시 적절한 의사결정지원이 가능하며, 관련 업무의 효율성증대 및 대민서비스 향상에 기석도가 크리라 판단된다.

• 상하수도학회지
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• 제23권1호
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• pp.47-55
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• 2009

Sewers are important national infrastructure and play an essential part by handling both wastewater and stormwater to minimise problems caused to human life and the environment. However, they can cause urban flooding when rainfall exceeds the system capacity. Sewer flooding is an unwelcome and increasingly frequent problem in many urban areas, and its frequency will increase over time with urbanisation and climate change. Under current standards, sewers are designed to drain stormwater generated by up to 10 year return period storms, but data suggests that many in practice have been experienced flooding with exceeding system capacity under increased storm events. A large number of studies has considered upgrading or increasing the design standard but there are still lack of information to propose a suitable return period with the corresponding system quantity to achieve. A methodology is required to suggest a proper level of standard within a suitable sewerage rehabilitation planning that can avoid the exceedance problem. This study aimed to develop a methodology to support effective sewer rehabilitation that could prevent urban flooding mainly resulted from the exceedance of existing storm sewer system capacity. Selected sewerage rehabilitation methods were examined under different storm return periods and compared to achieve the best value for money.

• 상하수도학회지
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• 제25권6호
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• pp.935-947
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• 2011

In the era of climate change, the feasibility of a 'multi-functional storage facility' was evaluated in terms of various key performance indices such as flooding prevention effects, urban pollution reduction effects, and rainwater harvesting effects. As a result, the Korea Ministry of Environment introduced a new concept of 'multi-functional storage facility' for sewer flooding prevention and urban non-point pollution reduction. Prior to introducing these infrastructure (a large underground storage facility), the more details were needed to be examined carefully in all of technical aspects of construction and management. It was also well known that the validity of installation of 'multi-functional storage facility' was sometimes weakened because of a low B/C ratio.

• 대한지리학회지
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• 제43권5호
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• pp.743-760
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• 2008

이 논문은 미국 매릴랜드 주의 우선투자지역 설정과 이에 기반한 인센티브 프로그램이 기반시설의 투자위치에 어떤 영향을 주고 있는지를 검증하려는데 그 목적을 두고 있다. 매릴랜드 주의 우선투자지역 프로그램은 도시스프롤을 억제하고 있는가? 이 물음에 대한 답을 구하기 위하여 본 연구에서는 1997년부터 2003년의 기간 동안 주 내의 각 카운티로부터 상하수도 기반시설 투자에 대한 자료를 수집하였다. 실증분석은 두 부분으로 구성되어 있다. 첫 번째 부분은 1997년과 2003년 사이에 카운티별로 우선투자지역의 내부와 외부에 이루어진 상하수도 시설 투자의 패턴을 대상으로 한 분석이다. 두 번째 부분에서는 카운티 단위에서 우선투자지역의 내부 혹은 외부로 투자결정이 이루어지는데 영향을 준 조건들을 확인하는 분석이다. 분석을 위하여 다양한 방식의 회귀모형이 이용되었다. 분석의 결과 주정부의 지원금은 애초의 의도했던 바와 같은 역할을 한 것으로 확인되었다. 모든 추정방식에서 주정부 지원금의 계수값은 유의하였으며 기대한 바와 같은 방향으로 영향을 주고 있었다. 이는 주 정부의 지원금을 많이 받은 카운티일수록 우선투자지역 내부로의 투자가 많았고 외부로의 투자는 작았음을 의미한다.

• 한국물환경학회지
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• 제33권6호
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• pp.617-625
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• 2017

Both domestic and overseas urban drainage systems have been actively researched to solve the problems of urban flash floods and the flood damage that is caused by local downpours. Recent urban planning has been designed to better manage the floods of decentralized rainfall-management systems, and the installation of green infrastructure and low-impact development (LID) facilities at national ministries has been recommended. In this study, we use the EPA SWMM model to construct a decentralized rainfall-management network for each small watershed, and we analyze the effect of the drainage-capacity improvement from the installation of the LID technologies in vulnerable areas that replaces the network-expansion process. In the design of the existing urban piping systems, it is common to increase the pipe size due to the increment of the impervious area, the steep terrain, and the sensitive entrance-ramp junction; however, the installation of green infrastructure and LID facilities will be sufficient for the construction of a safe urban drainage system. The applications of LID facilities and green infrastructure in urban areas can positively affect the recovery of the corresponding water cycles to a healthy standard, and it is expected that further research will occur in the future.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2003년도 학술대회지
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• pp.67-72
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• 2003

Infrastructure asset management is a methodology for programming infrastructure capital investments and adjusting infrastructure service provision to fulfil established performance, considering the life-cycle perspective of infrastructure. In this study, the methodologies for infrastructure asset management system implemented in sewer management system, bridge management system, pavement and highway management system, and embankment dam management system are described with focus on the system in U.S. As the major methodology to support the decision-making for asset mangers to better allocate the limited funds to the area needing it the most. various demand forecasting methodologies used in wastewater, water, transportation, electricity, and construction are also introduced for their applicability towards infrastructure asset management.

• 상하수도학회지
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• 제33권2호
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• pp.141-150
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• 2019

Total organic carbon(TOC) was introduced as the water quality index of the rivers and lakes in 2013. This paper evaluated factors affecting effluent TOC concentrations and treated and discharged loads of existing publicly owned treatment works(POTWs). For selected POTWs with greater treatment capacity than $500m^3/day$, factorial analysis was used to consider effects of kinds of biological treatment processes, inflow of other types of wastewater(industrial, livestock, landfill leachate wastewater, etc.) with domestic wastewater, sewer separation rate, and effluent discharging zones in which different effluent criteria applied. As a result, those factors did not show significant effect on effluent TOC concentration of POTWs in effluent discharging zone I and II. However, In effluent discharging zone III and IV, kinds of biological treatment processes, the inclusion of other waste in influent of domestic wastewater, and the sewer separation rate were significant factors. The treated TOC load in POTWs was also not affected significantly by the variables set in this study. On the other hand, those three factors influenced significantly on the TOC load discharged to water bodies. The sum of factorial effects and the contribution rate of three factors to the discharged TOC load was 60.23 and 41%, 59.57 and 41%, and 42.04 and 18%, respectively.

• Ecology and Resilient Infrastructure
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• 제8권1호
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• pp.44-53
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• 2021

급격한 도시화로 인하여 도심지의 불투수 면적의 증가와 기후변화로 인한 국지성 집중호우로 인하여 기존 배수시설로 구성된 도시지역의 홍수 방어능력이 취약하게 되었다. 이와 같이 도심지의 우수 유출량이 증대되고 유출 양상이 변화되고 있는 다양한 도시지역에서의 원활한 내수배제를 위해서는 우수관거의 용량 증대 및 단순 지하 저류조의 설치가 아닌 기존 배수시설과 연계가 가능하면서도 배수가 용이한 형태의 간선저류지의 설치가 필요하다. 본 연구에서는 기존의 우수관거를 연계한 저류시설인 간선저류지 개념을 적용하고 유역 형상이 변화된 가상유역을 선정하여 간선저류지의 특성인자들과 설계를 위한 매개변수들의 관계를 분석하고 저류지의 설치위치 및 용량에 따른 우수유출저감효과를 검토하였다. 또한 여수 도원지구를 대상으로 간선저류지 설치위치 및 용량에 따른 관계를 검증하고 기존의 우수유출 저감시설과 간선저류지 설치에 따른 내수침수 저감효과를 비교 및 분석하였다. 간선저류지 적용에 따른 내수침수 저감효과를 분석한 결과, 간선저류지 설치에 따라서 침수면적이 약 66.5% 정도 감소하는 것으로 나타났으므로 본 연구에서 제시한 간선저류지는 도시지역의 내수침수를 저감시키는 데에 효과가 있는 것으로 판단된다.

• 환경위생공학
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• 제24권1호
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• pp.1-12
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• 2009

The various environmental problems that we face on today are basically about environmental quality. Since early 1960s affluent material was produced because of remarkable economic growth by many cooperations. However, for the lack of environmental policy, environmental pollutions has been serious. The central government should transfer the producing and consuming structure to environmental affinity through the regulations for developing Korea as a model of environmental nation which takes an active part in global environmental programme and in which the environment and economy are well harmonized. Moreover, the central government should take the lead in prevention of environmental pollution through the direct policies such as strengthening the discharge limit or setting up environmental basic institutions by securing budget for conserving environment. This thesis emphasize on the public institution among many environmental basic institutions for environmental anti-pollution project. It will find the problems with running those institutions, and will suggest the preview of improvement. Also, it is necessary to investigate of variation trend for inflow and pollutant loading to environmental infrastructure as increased of the diffusion rate as established and maintenance of sewer system. The purpose of this study is to investigate for inflow and pollutant loading to environmental infrastructure, and also to provide the method of efficiently maintenance and management. The results obtained were summarized as follows; 1. Survey of actual condition on operation and management of environmental infrastructure was evaluated the propriety of treatment process and problem of plant management. 2. Analysis of pollutant loading contribution for river system of environmental infrastructure with data analysis of water quality measuring network. 3. To investigate on case study for efficiently maintenance and management of environmental infrastructure. The result on this study was provide the method of efficiently maintenance and management with survey for establish and repair of sewer system and survey of actual condition on operation and management of environmental infrastructure in the water area of discharge to Geum River System. Application as guideline for establish and management of environmental infrastructure, and management of Geum River System. Also, application for preliminary data for fulfill-assess of total effluent regulation of water pollution.

• 한국물환경학회지
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• 제36권3호
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• pp.206-219
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• 2020

As urbanization and impermeable areas have increased, stormwater and non-point pollutants entering the stream have increased. Additionally, in the case of the old town comprising a combined sewer pipe system, there is a problem of stream water pollution caused by the combined sewer overflow. To resolve this problem, many cities globally are pursuing an environmentally friendly low impact development strategy that can infiltrate, evaporate, and store rainwater. This study analyzed the expected effects and efficiency when the LID facility was installed as a measure to improve hydrologic cycle and water quality in the Oncheon stream in Busan. The EPA-SWMM, previously calibrated for hydrological and water quality parameters, was used, and standard parameters of the LID facilities supported by the EPA-SWMM were set. Benchmarking the green infrastructure plan in New York City, USA, has created various installation scenarios for the LID facilities in the Oncheon stream drainage area. The installation and maintenance cost of the LID facility for scenarios were estimated, and the effect of each LID facility was analyzed through a long-term EPA-SWMM simulation. Among the applied LID facilities, the infiltration trench showed the best effect, and the bio-retention cell and permeable pavement system followed. Conversely, in terms of cost-efficiency, the permeable pavement systems showed the best efficiency, followed by the infiltration trenches and bio-retention cells.