• 한국농공학회지
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• 제44권1호
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• pp.57-68
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• 2002

In the irrigation facilities, the irrigation system is connected systematically, and thus, it agrees to the object-oriented concept. Since it is necessary to go through comparative evaluations and to devise several alternatives plans in designing the irrigation system, it will be very efficient to use the objects that contain the design data. In this study, the object-oriented methodology has been proposed to define the objects, which will be used in the design system of irrigation facility. Furthermore, as for the essential elements of the objects, concept of element objects is formulated. By employing this concept, appropriate element objects have been derided for the irrigation facility. Necessary data model for realization of the objects is examined and selected. And then, required elements for applying the selected data model to the irrigation facility will be proposed

• 한국농공학회지
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• 제45권5호
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• pp.67-76
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• 2003

The principal operation rule of irrigation reservoir is to accelerate the water use and supply water actively when water is sufficient, and to restrict water use and supply water deficiently in order not to stop the irrigation activity when water is scarce. In drought seasons. water should be saved in order to keep the reservoir not to be dried up during the irrigation season. It is important to know how much water should be saved, depending on the rice-growing season and water storage volume. For the drought control of irrigation reservoirs. the rotational irrigation scheduling in paddy with the operation rule curve developed in this study could be utilized as a software program to install TM/TC system for irrigation water supply by automation facilities.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2003년도 학술발표논문집
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• pp.287-290
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• 2003

To devise better development plan, survey was conducted about current Farmer's irrigation Practice on upland in the Youngsan River Irrigation Project District IV. Major upland crops are garlic and onion in this region. Currently, upland irrigation is conducted using ground water. It is found that irrigation interval is $2{\sim}3$ day for dry-field rice and $3{\sim}7$ days for other crop, in general. Whole day is required to irrigate for many farmers due to lack of facilities and water source. Farmers have no intention to change staple crops even after completion of Irrigation Project of Youngsan River District IV.

• 한국수자원학회논문집
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• 제42권10호
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• pp.825-843
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• 2009

농업가뭄에 대한 대책 마련을 위해서는 가뭄기간 동안의 농업용 수리시설에 의한 용수공급 가능량의 파악이 매우 중요하다. 본 연구에서는 네트워크 물수지 모형인 MODSIM을 이용하여 농업용 수리시설을 고려한 물수지 네트워크를 구성하고 36개년(1967-2002) 동안의 물수지 분석을 수행하여 농업용수 공급측면의 가뭄을 평가하였다. 분석 결과, 과거 가뭄발생 기간에 농업용수 부족량이 다른 기간에 비해 많이 발생함을 확인할 수 있었으며, 대표적인 가뭄 년인 1994, 1995, 2001년의 부족량은 745.8백만 m$^3$, 661.1백만 m$^3$, 696.8백만 m$^3$으로 분석되었다. 또한 소유역 평균 용수공급 가능량은 생 공용수의 경우 99.1 %, 농업용수의 경우 84.4 %로 비교적 낮은 공급 가능율을 보였으며, 1994, 1995, 2001년의 농업용수공급 가능량은 74.8 %, 79.2 %, 77.9 %로 소유역 평균보다 낮은 수준으로 분석되었다. 농업용 수리시설물의 기여도 평가를 수행한 결과 양수장과 보의 기여율은 32.5 %, 집수암거와 관정의 기여율은 4.0 %로 분석되었으며, 집수암거와 관정은 양수장과 보에 비해서 상당히 적은 기여율을 갖지만 농업가뭄 해소에 어느 정도 도움을 주는 것으로 분석되었다.

• 한국지리정보학회지
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• 제10권1호
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• pp.73-83
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• 2007

농촌지역의 복잡한 물관리 체계를 정립하고 효율적인 용수관리를 위해서는 하천과 농업용 수리시설물의 연계를 통한 관개시스템의 네트워크 모델링이 필요하다. 본 연구에서는 수자원분야의 지리정보데이터를 다루도록 개발된 ArcHydro Model을 한국농촌공사에서 개발한 농촌용수수요공급량산정시스템 (AWDS: Agricultural Water Demand & Supply Estimation System)과 연계하여 안성천유역내에 위치하는 "안고"농촌용수구역을 대상으로 네트워크 모델링을 구현하였다. ArcHydro Model을 이용하여 유역내의 24개의 저수지, 18개의 양수장, 28개의 취입보 등 총 70개의 수리시설물의 공간객체와 하천망간의 연관성을 부여하여 상호간의 위상관계를 가지도록 네트워크 모델링을 하였다. 또한 농촌용수수요공급량산정시스템에 대한 텍스트 결과를 ArcHydro Model을 통하여 수리시설물의 공간위치를 가시적으로 표현함으로서 특정 시설물의 위치파악이 쉽고, 순차적인 물수지의 체계를 이해하기 쉽도록 ArcGIS의 시스템에 메뉴를 추가하여 개발하였다.

• 한국농공학회:학술대회논문집
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• 한국농공학회 1998년도 학술발표회 발표논문집
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• pp.237-242
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• 1998

Salt accumulation is frequently experienced in soils under protected cultivation. Since protected cultivation does not have rainfall and resulting infiltration, salt accumulation in the soils is inevitable. In this study, analyzed were chemical charecteristics of soils under protected cultivation to investigate the factors which may contribute the salt accumulation. Soil samples were collected from 99 protected cultivation facilities around An-sung Gun, Gyungki-Do and analyzed for electrical conductivity, pH, organic matter con-tents. The results showed that there was no significant trend of changes in electrical conductivity and pH along cultivation years. the only factor influencing salt accumulation was irrigation type. Soils in facilities using drip irrigation showed higher electrical conductivity than those using diversion-hose type irrigation.

• 한국농공학회지
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• 제40권1호
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• pp.88-95
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• 1998

Salt accumulation is frequently experienced in soils under protected cultivation. Since protected cultivation does not bave rainfall and resulting infiltration, salt accumulation in the soils is inevitable. In this study, analyzed were chemical characteristics of soils under protected cultivation to investigate the factors which may contribute the salt accumulation. Soil samples were collected from 99 protected cultivation facilities around Ansung-Gun, Gyungki-Do and analyzed for electrical conductivity, PH, organic matter contents. The results showed that there was no significant trend of changes in electrical conductivity and pH along cultivation years. The only factor influencing salt acculmuation was irrigation type. Soils in facilities using drip irrigation showed higher electrical conductivity than these using diversion-hose type irrigation.

• 농업과학연구
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• 제28권2호
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• pp.132-146
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• 2001

Rice cultivation is not only the main resource of farm income and staple food but also the root of cultural life of Korean people. Korean government has carried out irrigation water development with heavy investment to cope with water shortage in rice fanning as a link of the five years economic development plans. In spite of the continuous accomplishment of irrigation water development, the marginal benefits-costs of irrigation water has not been studied. Owing to the government full support for the operation and maintenance of irrigation facilities, price of irrigation water as a membership fee could not be formed as the municipal and industrial water prices. Accordingly this study is aimed at identifying firstly the marginal benefits-cost of irrigation water, secondly deriving the macro-econometrics models as supply and demand functions of irrigation water and thirdly examining the marginal benefits-cost ratio. The trends of supply and demand prices of irrigation water were estimated annually. Considering the marginal benefits-cost ratio as 1.3, it was identified that additional irrigation water development projects still have an economic feasibility under the present economic situation in Korea.

• Current Research on Agriculture and Life Sciences
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• 제31권2호
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• pp.139-147
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• 2013

This study analyzed agricultural water distribution systems for the utilization of water demand-oriented water supply systems. Three major TM/TC(telemeter/telecontrol) districts of agricultural water management were selected for analyzing the characteristics of the water distribution systems. In addition, the characteristics of the water supply systems for general water supply zones based on irrigation facilities were also investigated, along with the case of special water management during the drought season. As a result, high annual and monthly variations were observed for the water supply facilities, including the reservoirs and pumping stations. In particular, these variations were more obvious during the drought season, depending on the type of facility. The operations of the pumping stations and weirs were more sensitive to the stream levels than the reservoirs, and the smaller reservoirs were influenced more than the larger reservoirs. Therefore, a water-demand-oriented water supply system should consider the existing general practices of water management in the agricultural sector, and focus on achieving a laborsaving system rather than water conservation in the case of reservoirs. Equal water distribution from the start to the end point of irrigation channels could be an effective solution for managing pumping stations.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2001년도 학술발표회 발표논문집
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• pp.241-245
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• 2001

In this study, we designed irrigation channel which meet function of waterquality purification and landscape as well as waterquantity using planting in Sanggye-ri Yeomsan-myeon Yeounggwang-gun Jeollanam-do. First, according to hydrology characteristic, irrigation channel is designed dividing three zone flood control zone, river-friendliness facilities zone and naturally favorable zone. Second, for designing planting, criterion of selecting plant is established. As a result, we designed planting dividing segment to harmony regional characteristic and landscape.