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An Analysis of the Flood Mitigation Effect from Construction of the New Channel at Eunhaengcheon Stream Using 2-D Numerical Modeling

  • Crisisonomy
  • Abbr : KRCEM
  • 2017, 13(8), pp.101-112
  • DOI : 10.14251/crisisonomy.2017.13.8.101
  • Publisher : Crisis and Emergency Management: Theory and Praxis
  • Research Area : Social Science > Public Policy > Public Policy in general
  • Received : July 20, 2017
  • Accepted : August 8, 2017
  • Published : August 31, 2017

Moo Pyung Baek 1 Won Jun Tak 1 Kye-Won Jun 1 Chang Deok Jang 1

1강원대학교

Accredited

ABSTRACT

The climate of South Korea is characterized by concentrated rainfall during summer. This tends to increase water level rapidly during the flood season, which could lead to disasters. Rapid urbanization lessens the natural drainage and flood mitigation capacity in the city, which may increase the scale of the disaster. This study focuses on the urban centers and the areas in Eunhaengcheon stream where frequent inundations have been reported since they are vulnerable to excessive water level increase during the flooding season. In this regard, under the assumption that a new channel is installed at the stream as a safeguard against flooding, the study conducted numerical river modeling by using the RMA-2 model. The study also compared the hydraulic characteristics before and after the installation of the new channel at the stream to identify the related details such as flow rate distribution, super-elevation, water impact area and dead zone. It then analyzed the impact of the new channel installation on the river along with its flood mitigation effect.

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