• 한국농공학회:학술대회논문집
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• 한국농공학회 2005년도 학술발표논문집
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• pp.164-169
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• 2005

It is design and manufacture which the rake operated in and out of water. Also irrigation test result of several times, the flux inside the waterway collects 0.15m/s to case below the dirt which is accumulated in the rake 30kg, difficulty was to examine closely the thing, it followed hereupon and the grade in the agriculture waterway flux inside the cursor waterway was quick, or, with water level in dirt removal it established in the irrigation facility downstream it will be able to increase a flux, very the possibility of getting an efficient power it is it knew.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2006년도 학술발표회 논문집
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• pp.323-327
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• 2006

During the past decades in South Korea, there have been several projects to reduce water demand and save water for paddy irrigation system by automation. This is called as intensive water management system by telemetering of paddy ponding depth and canal water level and telecontrol of water supply facilities. This study suggests a method of constructing topology-based irrigation network system using GIS tools. For the network modeling, a typical agricultural watershed included reservoirs, irrigation and drainage canals, pumping stations was selected. ArcHydro tools composed of edge, junction, waterbody and watershed were used to construct hydro-network. ArcHydro Model was then designed and the network was successfully built using the HydroID. Visualization using ArcHydro tools could display table property of each object. ArcHydro Model was linked to Agricultural Water Demamd and Supply Estimation System (AWDS) which developed by Korea Rural Community and Agriculture Corporation (KRC) to extract information of the study area. And menu of supply facilities information, demand analysis and supply analysis constructed for information acquisition and visualization of acquired informations.

• 한국농공학회지
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• 제34권2호
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• pp.21-39
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• 1992

Many problems were found out the remarkable unbalance between paddy fields and up-land areas, or between plain and mountainous areas, unreasonable establishing of land consolidaton boundaries without consideration of rural development, lower leverl of construction technology of the roads and canals for agricultral use ad operation and maintenance of them by human power far apart from the ages of high technology, high information and free internationalisation, and too slow progress to overcome the weak agricultural circumstances etc. through the survey in the past executed land consolidation projects. The basic ways for solution of these problems for propulsion of land consolidation project through investigation are summarized as follows : 1. Land consolidation project should be executed to the direction of balanced regional development, laying stress on the upland and mountainous areas in order to carry out the agriculture effectively. 2. the acreage of land consolidation project to be conducted anually should be increased to overcome the serious underdeveloped agricultural development. 3. It should be developed to the way in accordance with the order of land use from the view point of rural integral development including the rural readjustment. 4. The level of the structures of road and canal, the size of standard lot and the grouping of land substitution should be to incraese the productivity of land and labour more than ever and reached to a degree in cope with the age of industrialization, information and free internationalisation. 5. The level of the management of agricultural water use and the maintenace of the various facilities should be developed to be automatization, remote control, central control and information processing instead human work. 6. Land substitution should take a measure of grouping method in accordance with the agricultural plan and farming organization, which can overcome high industrialized society in place of the substition by origin land. 7. Land consolidation project should be planned in order to fulfil a conservative function of ecosystem and resources together with improvement of land and labour productivity.

• 한국농공학회논문집
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• 제59권3호
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• pp.83-96
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• 2017

This study presented a surface water quality modeling framework considering the spatial resolution of pollutant load estimation to better represent stream water quality characteristics in the Saemangeum watershed which has been focused on keeping its water resources sustainable after the Saemangeum embankment construction. The watershed delineated into 804 sub-watersheds in total based on the administrative districts, which were units for pollutant load estimation and counted as 739 in the watershed, Digital Elevation Model (DEM), and agricultural structures such as drainage canal. The established model consists of 7 Mangyung (MG) sub-models, 7 Dongjin (DJ) sub-models, and 3 Reclaimed sub-models, and the sub-models were simulated in a sequence of upstream to downstream based on its connectivity. The hydrologic calibration and validation of the model were conducted from 14 flow stations for the period of 2009 and 2013 using an automatic calibration scheme. The model performance to the hydrologic stations for calibration and validation showed that the Nash-Sutcliffe coefficient (NSE) ranged from 0.66 to 0.97, PBIAS were -31.0~16.5 %, and $R^2$ were from 0.75 to 0.98, respectively in a monthly time step and therefore, the model showed its hydrological applicability to the watershed. The water quality calibration and validation were conducted based on the 29 stations with the water quality constituents of DO, BOD, TN, and TP during the same period with the flow. The water quality model were manually calibrated, and generally showed an applicability by resulting reasonable variability and seasonality, although some exceptional simulation results were identified in some upstream stations under low-flow conditions. The spatial subdivision in the model framework were compared with previous studies to assess the consideration of administrative boundaries for watershed delineation, and this study outperformed in flow, but showed a similar level of model performance in water quality. The framework presented here can be applicable in a regional scale watershed as well as in a need of fine-resolution simulation.

• 환경생물
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• 제36권1호
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• pp.33-42
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• 2018

인도네시아의 열대 이탄지는 황폐화되고 농경지 및 조림지로 전용되어왔다. 수로는 열대 이탄지의 지하수위를 관리하고 작물의 생산성을 높이기 위해 설치되었으나, 열대 이탄지의 구조를 파괴하고 침하 및 산불 발생 위험을 증가시켰다. 이에 따라, 인도네시아 정부는 수로로 인한 문제를 막기 위한 정책과 모라토리엄을 마련하였다. 그리고 해당 정책들에 따라 이탄지 재습지화에 관한 시범사업들이 일부 수행되었다. 우리나라가 열대 이탄지를 재습지화 한다면 추후 탄소 배출권을 확보할 수 있는 가능성이 있으므로, 적절한 재습지화에 관한 자료가 필요하다. 이에 따라, 본 연구에서는 열대 이탄지에 적용되는 정책의 흐름을 조사하고 이 시범사업들의 설치 계획, 고려사항, 댐 설계, 재료, 설치 방법, 모니터링 방법, 그리고 소요 시간 및 비용 등에 대해 분석하였다. 이탄층의 깊이가 3 m 이상인 지역은 개발이 제한되고 개발 허가 발급이 중단되었으며, 복원을 위한 수로차단이 설치되었다. 이 지역에서는 댐의 지속성과 지역 이해당사자들의 참여를 독려하는 것이 우선순위로 여겨졌다. 개발 허가지역의 경우에는 개벌과 화전이 금지되었으며, 지하수위를 유지하기 위한 수로차단에 목적을 두었고, 수로차단을 설치할 때에는 작업 및 비용의 효율성이 우선적으로 고려되었다. 조사 결과를 바탕으로 본 연구에서는 인도네시아 열대 이탄지의 규제 적용 및 수로차단 설치 시 적용할 수 있는 방안들을 제시하였다. 이러한 결과는 동남아시아 지역의 배수된 열대 이탄지에 적합한 수로차단을 계획하는 데 기여할 수 있을 것으로 사료된다.

• 한국지역지리학회지
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• 제3권2호
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• pp.37-87
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• 1997

만경강유역을 하나의 연장선상에 놓고 연구한 결과, 그 공간상에서 역사와 더불어 형성발달해온 시공연속체를 확인할 수 있었다. 만경강상류에서 하류 하구연안에 이르는 면장공간상에서의 개간과정은 여말에서 부터 시작되어 오늘에 이른 것으로 볼 수 있다. [기원지-지향지] 지향가설에서 본 개간과정에서 개간의 기원지는 만경강상류 산간계곡의 지류곡지 개간을 효시로 하여 기원지가 이루어지고, 조선조 중기까지는 수방대책의 발달과 더불어 하천 중류까지 진출하고, 하천 본류에 대한 하류지역의 계간은 하천의 규모와 유수량의 증가로 인한 하안의 홍수와 범람을 극복할 수 있는 인공제방을 축조할 수 있는 기술수준에 이른 1920년대에 들어서야 본격화되고, 그후 연이어 하구연안의 간석지 개간도 시행되어 개간의 개척첨단이 이들 지향지인 해안간석지일대에 형성되는 것을 볼 수 있다. 시간의 흐름과 더불어 각 시기마다 공간의 변화도 수반되어 시공연속체가 발달하는 것을 볼 수 있다. 취락의 경우 개간과정에 따라 산간계곡 산록일대에서는 주변입지적 집촌, 하천중류와 하류에서는 중앙입지적 집촌, 하천하구 간석지에서는 중앙입지적 열촌형태가 우세하게 나타났다.