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A Study on Flow Characteristics around Sol-seom in the Gagokcheon Using RMA-2 Model

  • Crisisonomy
  • Abbr : KRCEM
  • 2013, 9(10), pp.141-148
  • Publisher : Crisis and Emergency Management: Theory and Praxis
  • Research Area : Social Science > Public Policy > Public Policy in general

윤지준 1,  Kye-Won Jun 1

1강원대학교

Accredited

ABSTRACT

In order to analyze the flow characteristics around Sol-seom at the mouth of the Gagokcheon, this study applied the RMA2 model, which is a two-dimensional flow analysis model using the finite element method. The values indicated in the master plan for river development of Gagokcheon were used for the topographic and input data require to simulate the model. In order to understand the flow characteristics according to the presence or absence of Sol-seom and bridge structure at the mouth of the river, the RMA-2 model constructed the mesh in the two forms to perform simulations. As a result, the simulated water-level difference between the indicated design flood level and RMA-2 model was 0.04-0.11m. In fact, in order to analyze the effects of Typhoon Sanba(2012), which made landfall on South Korea on September 17, 2012, flow analysis was conducted on the observed flow in Typhoon Sanba(2012) as inflow discharge. As a result of analysis, the flow velocity on the right bank was a little faster than that on the left bank centering Sol-seom. This study analyzed the hydraulic characteristics according to the presence or absence of structures including Sol-seom. As a result, there was no significant difference in the water level, but the maximum flow velocity increased to 0.27 m/sec by Sol-seom and bridge.

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