• 한국도로학회논문집
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• 제15권3호
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• pp.127-135
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• 2013

PURPOSES : The purpose of this study is development of automatic equipment to measure the road water-reservoir which can be one of factors for road traffic safety inspection and its application to safety analysis. METHODS : The scopes of this study are the examination of the riskiness and location of road water-reservoir through literature review, development of appropriate sensor and automatic equipment to survey the road water-reservoir and evaluation of field application. RESULTS: The laser lighting and IR camera were selected to develop the equipment. It was found from the field calibration that there is a high correlation between rutting and road water-reservoir and road water-reservoir caused by rutting can be correctly calculated. About 20.2km of national highway were inspected for case study and field application. It was found from correlation of traffic incident that 2.08km of the latent length for water-reservoir which is related to 12 traffic incidents were analyzed. CONCLUSIONS : This technique can be utilized evaluation method for road condition such as road water-reservoir for conventional evaluation system such as road traffic safety assessment and safety analysis and it can be use to new evaluation system to apply various road condition and traffic condition.

• 한국조경학회지
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• 제35권6호
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• pp.14-20
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• 2008

The agricultural reservoir watershed plan suggests three specific indices or ways to measure the potential for maintaining reservoir quality in balance with existing or proposed uses: an index of the reservoir's vulnerability to accelerated eutrophication, an index of the degree of land use intensity in reservoir watersheds, and an index of present water quality. Three items that contribute to reservoir eutrophication are included in the vulnerability index: the ratio of reservoir volume to drainage-basin area, shoreline configuration, and mean depth. The watershed land-use intensity index is based on road proximity and upland watershed land-use intensity. Water quality can be given a COD level. All six indicators are considered separately and then rated as follow: low (1), medium (2), or high (3). Five out of 30survey sites were less than 8points, 17sites were less than 11points and 8sites were less than 14points. This study suggests that the sites in the first ranking were potential areas for preservation, sites in the second ranking were potential areas for environmental friendly planning and sites in the third ranking were potential areas for residential need oriented planning. The advantage of this study is the low cost of gathering data for the development of local policy for the planning, management and protection of reservoir basin.

• 한국지하수토양환경학회지:지하수토양환경
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• 제13권6호
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• pp.85-92
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• 2008

소양강물은 춘천과 서울지역 시민의 중요한 수원이다. 2006년 태풍 에위니아로 악화된 탁수현상은 예년과 달리 280일 이상 지속되었으며 이로 인하여 춘천 및 서울지역 물 공급에 차질을 빚었다. 한편 소양강 유역의 약 55%에 해당하는 고랭지밭의 토사유출이 탁수현상의 주요원인으로 꼽히며 이와 함께 무분별한 산지개간, 도로의 확포장, 임도개설 등도 탁수를 가중시키는 것으로 알려진다. 본 연구에서 2006년 6월${\sim}$2008년 8월간의 소양강 유역의 탁도, 강수량, 댐수위 등을 분석한 결과 탁도는 일 강우와 49일의 지연시간을 두고 최대의 상관성(r = 0.28)을 보였으며 특히 댐 수위와는 4일의 지연시간에 대해 탁월한 상관성(r = 0.60)을 나타냈다. 그리고 2006년과 2007년 두 차례 발생한 탁수의 지속기간과 거리별 탁도 자료를 이용하여 분석한 결과 취수원인 팔당댐에 탁수(10 NTU)가 도달하기 위한 소양강댐의 기준 탁도는 약 31 NTU로 추정되었다. 또 분석을 통해 향후 탁수발생 시 지속기간을 예측할 수 있는 지배감쇠곡선(master recession curve)을 제시하였다.

• Ecology and Resilient Infrastructure
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• 제3권2호
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• pp.143-151
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• 2016

호안 보강 (armoring)은 하천, 호수 및 저수지의 호안 침식을 방지하기 위하여 일반적으로 사용하는 공학적 기법이다. 호안 보강은 육역-수역 경계부를 변경하고, 호안 근처의 지형, 수문, 퇴적물 조성 및 수질을 변화시켜서 호안 식생에 영향을 미친다. 본 연구에서는 대형 저수지인 의암호의 육역-수역 경계부에서 인위 교란이 호안 식생의 군집 구조와 분포에 미치는 영향을 파악하고자 하였다. 의암호의 호안선은 60% 이상이 콘크리트 옹벽, 사석, 돌망태로 보강되어 있었다. 탈경향대응 분석 (DCA)의 결과에 의하면 보강에 의하여 바뀌어진 호안의 식생 구조가 수생식물 우점 생태계에서 습생식물 우점 생태계로 변화하였다. 호안 보강은 육역-수역 경계부에서 점진적 연속성을 파괴하였고 외래식물의 생물침입을 초래하였다. 2010부터 2013년까지 호안 식생의 분포 면적은 수생식물은 감소하였고 습생식물은 증가하였다. 결론적으로 의암호에서 보강, 도로 건설, 휴양 등과 같은 인간 교란은 호안 식생에서 육역화, 횡단 연속성의 상실, 생물침입을 초래하였다. 그러므로 호안 생태계의 특이성을 보전하기 위하여 호안 수생식물 식생대을 확대할 수 있도록 호안 보강 구조물을 철거하거나 재조성하여야 할 것으로 생각된다.

• 환경영향평가
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• 제20권4호
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• pp.489-496
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• 2011

The water pollution such as oil spill from stream and river because of car accidents have been frequent cases in the watershed of Dam. However we don't have any simulation methods about flow modeling on the watershed and stream tree. In this study aims to analyze water pollution accidents area on impact range for ANDONG-Dam. The focused watershed and the risk range of path analysis model was designed by GIS database. The frequency of transportation accidents which may occur from road accidents in the level of quantitative and qualitative analysis to map flow analysis using ArcHydro Model and Open Geospatial Consortium(OGC) API. and the path way from the accident point to the reservoir stayed on the path was simulated. The area of risk accessment index was displayed with cell and grid of dam area.

• 한국농공학회논문집
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• 제50권5호
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• pp.73-81
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• 2008

This study evaluated the applicability of in-situ concrete pile as a stabilization materials of embankment slopes including agricultural reservoir and rural road etc. The experimental embankment slopes was constructed to investigate the strength properties of in-situ concrete pile with embankment materials and boring methods. The test variable were applied the boring method(driving and augering) and water-cement ratio. In order to analyze the physical and mechanical properties of embankment materials, permeability and water contents test were was performed. Also, the freshly and harden of in-situ concrete properties were measured by the slump and compressive strength tests. The results showed the water content and permeability of embankment materials and boring methods affected on compressive strength of in-situ concrete pile.

• 자원환경지질
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• 제38권3호
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• pp.247-260
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• 2005

회동저수지 집수분지 내 주요 도로변 퇴적물의 중금속 함량은 토양오염 우려기준보다 낮게 나타났다 중금속함량이 높은 지역은 대부분 교통량이 많은 7번 국도이며 , 특히, 커브지점, 우수관, 과속단속 지점, 횡단보도 등에서 높은 함량을 보인다. 도로변 퇴적물 내 입도별 중금속 함량은 세립 입도($63{\mu}m$이하)일수록 높은 값을 보여주고 있으나, 총 함량은 조립 입도의 퇴적물($100{\mu}m$이상)에 의해 결정된다. 이는 우기 시에 유출수에 의해 세립 퇴적물이 주변 수계로 이동된 결과로 해석되며 수영강 및 회동저수지의 수질에 악영향을 미칠 수 있다. 따라서 교통량이 많은 7번 국도와 퇴적물이 쉽게 주변 수계로 유입될 수 있는 한물교와 같은 교량에서 퇴적물의 이동을 조절할 수 있는 적절한 처리시설이 요구된다.

• Advances in concrete construction
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• 제4권1호
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• pp.15-26
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• 2016

In Algeria, wastes are often stored in such conditions that do not meet standards. Today and more than ever, we really must implement an environmentally management of wastes. Recovery of waste in Algeria has a considerable delay due to the absence of a policy favorable to the development of waste management. But many researchers have shown the possibility to reuse dredged sediments in road construction. Through Europe, recent research works have been already performed on dam sediments. Present study fits into the context of the valorization of dredged sediments from Fergoug dam. They are found in considerable quantities and mainly composed of mineral phases, organic matters and water. The reservoir sedimentation poses problems for the environment and water storage, dredging becomes necessary. Civil engineering is a common way of recycling for such materials. Dredged sediments have not the required mechanical characteristics recommended by the standards as GTR guide (LCPC-SETRA 1992). So as to obtain mechanical performance, dredged sediment can be treated with cement, lime, or replaced materials like quarry sand. An experimental study has been conducted to determine physical and mechanical characteristics of sediments dredged from dam. Then different mixtures of sediment and/or quarry sand with hydraulic binders are proposed for improving the grain size distribution of the mixes. Finally, according these mixtures, different formulations have been tested as alternative materials with dredged sediments.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.257-259
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• 2005

A crop management system was developed using Visual Basic and ArcGIS VBA. The system is operated on ArcGlS 8.3 with Microsoft Access MOB. Landsat +ETM, KOMPSAT-l EOC, ASTER VNIR and IKONOS panchromatic (pan) and multi-spectral (MIS) images were included in the system to understand what kind of agriculture-related information can be extracted for each images. Agriculture related data inventories using crop cover information such as texture and average pixel value of the crop based on cultivation calendar were designed ,and implemented. Three IKONOS images (May 25,2001, December 25,2001, October 23,2003) were loaded in the system to show crop cover characteristics such as rice, pear, grape, red pepper, garlic, and surface water cover of reservoir with field surveys. GIS layers such as DEM (Digital Elevation Model), stream, road, soil, land use and administration boundary were also supplied and can be overlaid with images to enhance the understanding the general agricultural characteristics and identifying the location easily.

• 한국농공학회논문집
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• 제58권2호
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• pp.65-71
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• 2016

The new concept of agricultural water supply potential, which is mean annual turnover rate times unit storage capacity, was introduced for agricultural reservoirs. We investigated characteristics of mean annual turnover rate and unit storage capacity for agricultural reservoirs with storage capacity of over $1million\;m^3$. The curve of agricultural water supply potential represents change in mean annul turnover rate according to change in unit storage capacity. The mean annual turnover rate and unit storage capacity in the reservoirs with high minimum storage ratio are significantly higher than those in the reservoirs with low minimum storage ratio. Most of unstable water supply reservoirs showed low mean annual turnover rate or low unit storage capacity, indicating that mean annual turnover rate may be an index of stability degree for agricultural water use. The reservoirs with mean annual turnover rate of over 2 and unit storage capacity of over 0.8 m may be estimated as the stable water supply zone for 10 frequency dry year. The reservoirs with high agricultural water supply potential can belong to the wide range of stable water supply zone. The results suggest that relation between mean annual turnover rate and unit storage capacity may be used in evaluating stability degree for agricultural water supply in the reservoirs.