Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Behavior of Currents and Suspended Sediments around a Silt Screen

  • Jin, Jae-Youll (Coastal and Harbor Engineering Research Division, KORDI) ;
  • Chae, Jang-Won (Coastal and Harbor Engineering Research Division, KORDI) ;
  • Song, Won-Oh (Coastal and Harbor Engineering Research Division, KORDI) ;
  • Park, Jin-Soon (Coastal and Harbor Engineering Research Division, KORDI) ;
  • Kim, Sung-Eun (Coastal and Harbor Engineering Research Division, KORDI) ;
  • Jeong, Weon-Mu (Coastal and Harbor Engineering Research Division, KORDI) ;
  • Yum, Ki-Dai (Coastal and Harbor Engineering Research Division, KORDI) ;
  • Oh, Jae-Kyung (Department of Oceangraphy, Inha University)
  • Published : 2003.09.30
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Abstract

The behavior of Suspended Sediment Concentrations (SSC) around a silt screen in a microtidal coastal area was hydrodynamically measured. The current speed at the mid-layer about 30m downstream of the screen reduces to about half that at the same distance upstream. It was caused by the contraction of the vertical section due to the screen. Even during a relatively weak storm period the SSC increases to that of the value caused by dredging. Section-averaged SSC at the downstream of the screen is higher by about 60% than that at the upstream, suggesting that the silt screen plays an adverse effect rather than a constructive role in the reduction of SSC generated by dredging.

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References

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Cited by

  1. Laboratory investigation of hydraulic performance of silt screens vol.22, pp.5, 2010, https://doi.org/10.1016/S1001-6058(09)60212-2
  2. Efficiency of Hanging Silt Curtains in Crossflow vol.142, pp.1, 2016, https://doi.org/10.1061/(ASCE)WW.1943-5460.0000315