회복탄력성을 고려한 기상 시나리오별 가뭄 용수 공급방안: 나주호를 중심으로
Water Supply Alternatives for Drought by Weather Scenarios Considering Resilience: Focusing on Naju Reservoir
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Resilience has been widely used in various fields including design and operation of infrastructures. The resilient infrastructures not only reduce thedamage scale of various disasters but also reduce the time and cost required for restoration. However, resilience rarely applied to promote efficientmanagement of agricultural infrastructures. Recently, drought is an aggravating disaster by climate change and need countermeasures. Therefore, we triedto demonstrate evaluating measures in case of drought under consideration of resilience. This study applied the robustness-cost index (RCI) to evaluatealternative solution of the supply problem of a large agricultural reservoir under drought conditions. Four structural alternatives were selected to estimatethe robustness index (RI) and the cost index (CI) to obtain the RCI values. Structural alternatives are classified into temporary measures and permanentmeasures. Temporary measures include the development of a tube wells and the installation of the portable pump, while the permanent measures includethe installation of a pumping stations and the pumping water to the reservoir (Yeongsan River-Naju reservoir). RCI values were higher in permanentmeasures than those of temporary measures. Initial storage of the reservoir also affected RCI values of the drought measures. Permanent measuresinstallation and management of early stage of the reservoir storage shortage was identified as the most resilient system.
Abstract
Resilience has been widely used in various fields including design and operation of infrastructures. The resilient infrastructures not only reduce thedamage scale of various disasters but also reduce the time and cost required for restoration. However, resilience rarely applied to promote efficientmanagement of agricultural infrastructures. Recently, drought is an aggravating disaster by climate change and need countermeasures. Therefore, we triedto demonstrate evaluating measures in case of drought under consideration of resilience. This study applied the robustness-cost index (RCI) to evaluatealternative solution of the supply problem of a large agricultural reservoir under drought conditions. Four structural alternatives were selected to estimatethe robustness index (RI) and the cost index (CI) to obtain the RCI values. Structural alternatives are classified into temporary measures and permanentmeasures. Temporary measures include the development of a tube wells and the installation of the portable pump, while the permanent measures includethe installation of a pumping stations and the pumping water to the reservoir (Yeongsan River-Naju reservoir). RCI values were higher in permanentmeasures than those of temporary measures. Initial storage of the reservoir also affected RCI values of the drought measures. Permanent measuresinstallation and management of early stage of the reservoir storage shortage was identified as the most resilient system.
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