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- W2019342473 abstract "최근 들어, 지형의 영향을 받지 않으면서도 안정적으로 용수공급이 가능한 관수로 시스템을 이용한 농업용수의 공급에 대한 관심이 높아지고 있어, 대규모 농업단지 개발에 관수로 시스템이 많이 활용되고 있다. 본 연구에서는 농업용 관수로가 대부분 분기형임에 착안하여, 농업용수의 안정적인 확보와 효과적이고 경제적인 공급을 위해 분기형 관수로 설계 시, 최적관경산정을 산정할 수 있는 모형을 개발하였다. 개발된 모형은 농업단지에 적용하였으며, 구획형태에 따른 용수사용량별, 시점의 수두별, 동수구배별 최적 관경을 산정하여 그 분포를 파악하고 관수로 설계 표준화를 위한 자료를 제시하였다. 최적화 기법 역시 기존의 분기형 관수로 시스템의 선형화를 위해 관의 길이를 결정변수로 하였던 최적화기법에서 두가지 이상의 관경이 하나의 관로에 결정되는 단점을 막고, 절점의 압력 및 속도에 대한 제약조건을 고려하기 위해 새로운 방법의 최적화 시스템인 이진정수법을 이용하여 제안되었다. 제안된 모형은 농업용 관수로 설계의 표준을 제시하기 위해 다양한 경우에 적용하여 민간도 분석을 수행하였다. 본 연구의 결과를 이용하면 농업용 관수로의 구획형태와 용수사용량이 정해지면 가능한 최적관경을 프로그램을 실행하지 않고도 손쉽게 찾을 수가 있으며, 이는 경제적인 시공이 강조되고 있는 현재 농업분야에서 향후 설계에 활용한다면 매우 유용한 자료가 될 것으로 판단된다. The interest on the irrigation pipe network systems have been increased. The irrigation pipe network is not affected by the topography and possible to enough supply. Therefore, the network system is applied in the large scale agricultural complex. In this study, a model to optimize pipe diameters was developed to supply enough irrigation water efficiently in the branch type pipe network. The developed model was applied in a agricultural complex with several water demands, hydraulic head in the starting nodes, hydraulic gradients in the different types of the irrigation sector. The optimized pipe diameter was proposed for the standardization of the design. The decision variable of the conventional method was the length of the pipes to linearize the optimization system. In the method, more than two sizes of the diameter were proposed, which was not realistic. Therefore, in this study, the new optimization method was suggested using binary integer programming whose decision variables are the binary number to represent that the pipe with the proposed diameter was installed or not. The design standard was proposed using the simulation results from the sensitivity analysis. The result is used to find the optimal pipe diameter without the model simulation if the type of sector and water demand are known, which is very economic design for the future agriculture area." @default.
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- W2019342473 date "2012-10-31" @default.
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- W2019342473 title "Determination of the Optimal Pipe Dimeter for Irrigation Network using Binary Integer Programming and Developmenr of the Database for Design Standard" @default.
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