• Water Engineering Research
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• 제1권1호
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• pp.39-48
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• 2000

This work was completed in partial fulfillment of an on-going research ot descover the effective management of urban nonpoint sources. The current data was obtained from the area of Shingal, Kyunni-do. The investigation was are predominant soures of storm-runoff load and drainage. As a result of the investigation, the road was found to be most seriously contaminated and a significant potential source deteriorating the quality of streams and lakes in the vicinity of the town. Thus, in could be concluded that an effective and systematic cleaning technique must be developed as soon as possible and be frequently applied to the road.

• 기술사
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• 제43권6호
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• pp.31-34
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• 2010

Recently, due to localized heavy rain and flash floods in urban areas is becoming more frequent flood damage. To prevent flood inundation damage, to formulate the diverse directions in connection with the drainage system of buildings, roads, sewerage, pump stations, detention (retention) pond, and streams is very important. In addition, it is important for the uniform design criteria, the consistent of hydrologic and hydraulic analysis method, and a flood disaster mitigation systems connected with structural and nonstructural measures. To accomplish this, the method such as installation of storage facilities, infiltration facilities, and underground water tank, the optimal size of the design gutter and grate of the road, ensure the capacity of pumping stations, and the installation of a flood control channel into the deep underground requires comprehensive measures dimension in urban areas.

• Korean Journal of Geomatics
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• 제3권2호
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• pp.93-98
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• 2004

Fast urbanization and industrialization have resulted in rapid changes in the urban environment. For effective monitoring and management of these changes, a new surveying methodology that is more inexpensive and timely than the conventional remote sensing system if required. This paper proposes an unmanned airship videographic system capable of acquiring stable video. In addition, it presents approaches to constructing a prototype facilities management system based on VideoGIS, which links GIS functions and video data to provide actual spatiotemporal information.

• 대한토목학회논문집
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• 제28권3B호
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• pp.283-296
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• 2008

본 연구에서는 현재의 하천상태를 진단할 수 있는 도시하천 평가기법을 제시하였다. 이를 위해 국내 외 하천평가에 대한 문헌 및 연구자료를 조사하고 비교 분석하였으며, 예비하천조사를 실시하고 도시하천의 특성 및 하천의 치수기능 등을 고려하여 하천의 상태를 평가할 수 있는 평가인자를 도출하였다. 도시하천 평가기법은 상위단계, 중간단계, 하위단계의 3단계로 구성하였다. 상위단계에서 하천의 기능을 고려하여 제방, 하천, 생태환경의 3개 특성으로 구분하고, 중간단계에서는 3개 특성이 변형되고 훼손된 정도를 설명할 수 있는 10개의 평가부문(제방, 수로, 흐름, 하상, 비인공화 정도, 저수로변과 홍수터, 하천주변, 동물상, 식물상, 수질)으로 나누었으며, 하위단계에서는 도출된 53개의 평가항목을 구성요소로하여 단계적 평가가 가능한 평가기법을 제시하였다. 특성간, 평가부문간 가중치를 산정하기 위하여 하천전문가를 대상으로 설문조사를 실시하고, 이를 AHP(Analytic Hierarchy Process)를 이용하여 분석하였다. 하천의 규모와 복원정도를 고려하여 수원천, 안양천, 중랑천을 대상하천으로 선정하고 평가를 실시하여 도시하천 평가기법의 적용성과 평가정보의 가치 수준을 확인하였다. 평가결과는 항목지수, 부문지수, 특성지수, 총괄지수 및 평가등급으로 하천의 상태를 나타냈다. 본 연구에서 제시한 하천평가기법에 따른 하천평가결과는 하천이 변형되고 훼손된 부분과 정도를 파악함으로써 도시하천의 복원과 관리에 필요한 기초자료로 활용되어 질 수 있을 것으로 판단된다.

• 한국물환경학회지
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• 제29권6호
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• pp.739-745
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• 2013

This paper investigated the runoff characteristics of different properties of suspended solids in streams according to the watershed characteristics and dry/rainy season. Suspended solids were divided into VSS and NVSS depending on volatilization. The main results of this study were as follows. TSS were more correlated with NVSS than VSS. Suspended solids were positively related with the proportion of urban > paddy > upland, negatively related with forest cover. VSS were positively correlated with POP and POC. VSS, measured in dry season, would partly result from autochthonous production and could be an indirect indicator of organic suspended solids.

• Ecology and Resilient Infrastructure
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• 제9권2호
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• pp.124-129
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• 2022

도시하천은 이치수의 기능과 함께 생태적으로 건강한 도시환경을 제공함으로써 시민의 삶에 핵심축이 되어오고 있다. 반면 도시 고밀화에 의한 기반시설 확장 등과 더불어 지역의 하천에 대한 보전과 이용 측면에서 상충이 발생하고 있다. 지속가능한 하천을 위해서는 적절한 합의와 조율이 필요한 실정이다. 본 연구는 주민참여 협치예산을 통한 주민 제안 공론화의 장에서 나타난 다양한 의견을 분석하고자 한다. 은평구의 6개 하천을 대상으로 이용자 인식 조사와 전문가 인터뷰를 실시하였다. 이를 통해 도시생활권 지방하천과 소하천의 안정적이고 지속가능한 보전과 적절하고 균형 있는 이용 방안을 제안하였다.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2021년도 학술발표회
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• pp.142-142
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• 2021

An arbitrary representation of an urban drainage sewer system was devised using a geographic information system (GIS) tool in order to calculate the surface and subsurface flow interaction for simulating urban flood. The proposed methodology is a mean to supplement the unavailability of systematized drainage system using high-resolution digital elevation(DEM) data in under-developed countries. A modified DEM was also developed to represent the flood propagation through buildings and road system from digital surface models (DSM) and barely visible streams in digital terrain models (DTM). The manhole, sewer pipe and storm drain parameters are obtained through field validation and followed the guidelines from the Plumbing law of the Philippines. The flow discharge from surface to the devised sewer pipes through the storm drains are calculated. The resulting flood simulation using the modified DEM was validated using the observed flood inundation during a rainfall event. The proposed methodology for constructing a hypothetical drainage system allows parameter adjustments such as size, elevation, location, slope, etc. which permits the flood depth prediction for variable factors the Plumbing law. The research can therefore be employed to simulate urban flood forecasts that can be utilized from traffic advisories to early warning procedures during extreme rainfall events.

• 한국수자원학회논문집
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• 제41권9호
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• pp.929-941
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• 2008

본 연구의 목적은 다양한 하수관망과 하천을 포함하는 복잡한 토지이용으로 구성된 도시유역으로서는 비교적 유역면적이 큰 유역의 홍수예보모형으로 수문모형과 수리모형을 연계하는 방법을 제안하고, 이를 유역면적이 약 $300km^2$에 해당하는 중랑천 유역에 적용하여 적용 가능성을 평가하고자 한다. 본 연구에서 수문모형으로는 SWMM과 수리모형으로서는 HEC-RAS 모형을 선정하였으며, 적용대상유역인 중랑천 유역은 25개의 소유역으로 구분되었다. SWMM모형은 각 소배수구역의 지표흐름 및 하수관망 흐름 해석을 수행하며, HEC-RAS 모형은 하천에서의 부정류 흐름 해석을 수행하였다. 또한, 이들 각 모형의 입출력과 모형의 원활한 연계운영 및 효과적인 결과 표출을 위하여 GUI 시스템을 구축하였다. 구축된 시스템은 적용대상지역의 실측자료를 이용하여 모형 매개변수를 추정하였으며, 또한 모형의 적용성을 검증하였다. 적용대상지역의 주요 두 지점에 대해 모형의 적용성을 검토한 결과, 상관계수는 0.82-0.98, 모형 효율성 계수는 0.60-0.92의 범위를 나타내었다. 또한 본 연구에서는 맨홀의 초과유출과 하천 종 횡 단면의 수면곡선으로 맨홀 월류로 인한 내수침수 및 하천저수호안의 예측 가능성을 제시하였다. 본 연구에서 제안한 시스템은 중규모 이상 대규모 도시유역의 홍수예보 수문모형으로 활용 가능한 것으로 판단된다.

• 한국환경복원기술학회지
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• 제5권6호
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• pp.14-23
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• 2002

Daejeon is a large city in Korea and very high-speedly developing city. Recently urban area is expanding and large forest patch is fragmenting into small habitats because of urban sprawl. The fragmentation of large forest patch decreases the size of habitats and increases the loss of biodiversity in urban area. This study is to analysis the connectivity of green space of Daejeon metropolitan city, and suggest the optimum location of greening site and corridor in order to increase the connectivity of green space of Daejeon metropolitan city. The findings of this study are as follows; (1) The result of this study showed that ${\alpha}$ and ${\gamma}$ index are -0.24 and 0.20. A ${\alpha}$ index is very low and a ${\gamma}$ index is relatively low. (2) The dispersion was very high, for urban forest patches were isolated through fragmentation. Therefore, it needed ecological corridors in order to connect the patches. (3) A urban streams were very important in connectivity of urban green space. Urban riparian corridor must be preserved and restored. (4) A urban green space policy and planning must be prepared to increase the connectivity and assessment of alternatives must be accomplished from perspective of connectivity. The results of this study show the practical implications in perspective of green space planning and policy in Daejeon metropolitan city. The suggestions by findings of this study are to connect green space between large forest patch in urban fringe and island green space in inner city. Also, It is required that urban stream is restored to natural feature for use of corridor by wildlife.

• 한국환경복원기술학회지
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• 제12권6호
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• pp.153-163
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• 2009

This study was carried out to offer ecological restoration plan of local streams by analyzing the vegetation and flora around four local streams (Pungchoncheon, Namchangcheon, Ganggicheon, Woncheoncheon) in Namwon. Flora and vegetation investigation was done at April 2007 to August 2007, and June 2009. The 194 of vascular plants were identified which contain 53 families, 143 genera, 194 species. The Family frequencies arranged by the order of Family Compositae (14.4%), Family Gramineae (13.4%) Family Leguminosae (6.7%) and Family Polygonaceae (5.2%). The naturalized plants were listed as 33 species, and their naturalization ratio and urban index were found to be 17.0%, and 12.2%, respectively. In this study a total of 21 relev$\acute{e}$s collected and analyzed. 6 plant communities are differentiated : Riverine softwood forests (Phragmites japonica-Salix gracilistyla community), Perennial herb vegetations on lotic water zone (Phragmites japonica community, Phalaris arundinacea community), Perennial herb vegetations on lentic water zone (Persicaria thunbergii-Typha orientalis community, Phragmites communis community), Annual or biennial vegetations on waterside (Persicaria thunbergii community). Species showing the higer value in the plant communities were Persicaria thunbergii, Phragmites japonica, Artemisia princeps, Humulus scandens, Bidens frondosa, Oenanthe javanica, Agropyron tsukusinense var. transiens, Stellaria aquatica, and Lactuca indica var. laciniata.