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http://dx.doi.org/10.5762/KAIS.2016.17.10.403

Determination of operating offline detention reservoir considering system resilience  

Lee, Eui Hoon (Department of Civil, Environmental, and Architectural Engineering, Korea University)
Lee, Yong Sik (Department of Civil, Environmental, and Architectural Engineering, Korea University)
Jung, Donghwi (Research Center for Disaster Prevention Science and Technology, Korea University)
Joo, Jin Gul (Deparment of Civil Engineering, Dongshin University)
Kim, Joong Hoon (School of Civil, Environmental, and Architectural Engineering, Korea University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.17, no.10, 2016 , pp. 403-411 More about this Journal
Abstract
Recently, the number of occurrences of inundation and the severity of flood damage has increased rapidly as the frequency of localized heavy rainfall and the ratio of impervious area increased in urban areas. Most local governments focus on employing structural measures (e.g., the construction of detention reservoirs/pump stations, rehabilitation of drainage and sewer pipes) to prevent urban inundation. On the other hand, the effectiveness of implementing such structural measures is being dimished because there are already many inundation prevention facilities. The limitation of structural measures can be overcoming by employing non-structure measures, such as flood alerts and the operation of drainage facilities. This study suggests the pump operation rule (i.e., suggesting pump stop level) for a new detention reservoir operating method, which triggers the operation of a pump based on the water level at the monitoring node in urban drainage system. In the new reservoir operation, a total of 48 rainfall events are generated by the Huff distribution for determining the proper pump stop level. First, the generated rainfall events are distributed as frequencies, quartiles, and durations. The averaged system resilience value was determined to range from 1.2 m to 1.5 m is based on the rainfall-runoff simulation with rainfall generated by the Huff distribution. In this range, 1.2 m was identified considering the safety factor of 1.25 by the Standard on sewer facilities in 2011.
Keywords
Detention Reservoir Operation; Nonstructure Measure; Pump Stop Level; Rainfall-Runoff Simulation; System Resilience;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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