관 파괴 확률을 고려한 밭용수 관수로 배치 및 보조 관수로 설계 방법

Abstract

As rice paddies are being converted to upland fields, there is necessary to design agricultural irrigation pipelines for upland crops. The layout ofirrigation pipelines needs to consider spatial data, as they tend to be laid on plot boundaries, roads and rivers. The objective of this study was to designirrigation pipeline layouts for stable water supply considering spatial information. Two reservoir irrigation districts (Geoyeo and Shinheung) withsignificant conversion from rice paddies to upland fields were selected as study sites. The optimal number and location of water storages were designedusing a genetic algorithm. The branched pipeline layouts that minimized water supply failure areas were designed using Dijkstra algorithm and takinginto account pipe break probability. To ensure a stable water supply, the reduction in water supply areas was calculated after adding extra pipelinesconnecting branch lines. The results of branched pipeline layout, the Geoyeo site needed 3.2 km of mainline and 15.4 km of branch line, while theShinheung site needed 5.2 km of mainline and 11.2 km of branch line. The water supply failure areas were 2.96 ha in Geoyeo and 2.33 ha inShinheung. The water supply failure areas could be reduced by up to 9% in Geoyeo and by up to 15% in Shinheung by adding extra pipelines. Thisstudy can be applied to determine the layout of agricultural irrigation pipeline, ensuring a stable water supply for upland crops