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Experimental Study on the Deformation of Silt Curtain by Water Current

수리모형 실험에 의한 선박 부착형 오탁방지막의 거동특성 구명

  • 홍성구 (한경대학교 농업생명과학대학 지역자원시스템공학과) ;
  • 강구 (한경대학교 해양과학기술연구센터)
  • Received : 2012.10.04
  • Accepted : 2012.11.08
  • Published : 2012.11.30

Abstract

Silt curtains are constructed for minimizing pollution of sediment dispersion in water bodies. In spite of wide uses of the silt curtains, there are few studies for analyzing the effectiveness of them with respect to their dimension and hydraulic characteristics. Currently, the market of silt curtains does not provide the various dimension of them due to the limit of information regarding its effectiveness on reducing sediment pollution. In this study, a series of experiments were conducted to investigate hydraulic characteristics around the silt curtains under the different flow conditions. For this study, a silt curtain was fabricated and an open channel with 30cm of width and 40cm of depth was used. The results indicated that the silt curtain was not effective in preventing dispersion at flow velocities over 0.5m/s in real conditions. Based on the experimental results, it is required that approaching velocity should be minimized and the weight of bottom be increased in order to reduce deformation. The results of this study will provide information required to design appropriate dimension of silt curtains in various water environment such as velocity and water depths.

Keywords

References

  1. Kwon, K. C, N. S. Hong, M. H. Song, and C. G. Choi. 2003. Compatible Anchors of Silt Protector in Shallow Sea with Mud Seafloor Material. Journal of Ocean Engineerign and Technology 17(3): 7-12. (in Korean)
  2. Kim, G. Y. and J. Y. Chung, 1998. Diffusion of the Suspended Matter Caused by Dredging and the Effect of the Single Silt Protector. Journal of Ocean Engineerign and Technology 12(3): 1-8. (in Korean)
  3. Kim, J. K., T. S. Kang, and M. O. Lee. 2009. Suspended Material Diffusion and Tidal Current of North-eastern Gamak Bay. Proceedings of Annual Conference for Korean Society of Coastal and Ocean Engineers. 218-223. (in Korean)
  4. Maeng, J. H, 2000. Effectiveness of Silt Protector in Reducing Suspended Sediment Dispersion during Harbor Works. Environmental Policy Study 5: 32-34. (in Korean)
  5. Maeng, J. H, K. W. Cho, Y. J. Joo, J. H. Lee, J. S. Hong, Y. K. Kang, and G. H. Kim. 2005. A study on effective mitigation measures for environmental impacts of oceanic reclamation projects. Research Report of Korea Environment Institute. pp.300. (in Korean)
  6. Oh, Y. M, and W. O. Song, 2002. On the management of silt protector in Korea. Proceedings of Annual Conference for Korean Society of Civil Engineers. 3155-3158. (in Korean)
  7. Oh, Y. M, and W. O. Song, 2003. Comparison of Silt Protector Design Between Korea and Japan. Korean Society of Coastal and Ocean Engineers 15(1): 66-70. (in Korean)
  8. Lee, J. W., J. H. Maeng,, K. W. Cho, K. Y. Yang, and Y. S. Kim. 2003. The Movement Characteristics of Suspended Solid (SS) in Harbor Construction (II) - The Landfill Construction and The Grab Dredging Construction. Korean Society of Coastal and Ocean Engineers 6(2): 46-53. (in Korean)
  9. Ministry of Ocean and Fishery. 2005. Guidelines for Harbor and Port Development.
  10. Hyun, B. S., Y. H. Noh, and M. H. Nam, 2001. Numerical Simulations on Flow Field Around Silt Protector. Proceedings of Annual Conference for Korean Society of Coastal and Ocean Engineers. 127-134. (in Korean)
  11. Hong, N. S., 2005. Influence of Silt Protector on 3-D Tidal Flow. Dong-A University Environmental Research Institute 27(1): 89-96. (in Korean)
  12. Hong, N. S., 2010. Investigation of Reducing Characteristics for the Spreading of Dredging Soil and the Diffusion of Contaminant by Silt Protector Curtain through Three Dimensional Numerical Model Experiment. Journal of Ocean Engineering and Technology 24(4): 78-85. (in Korean)
  13. Hong, N. S., K. Y. Kim, and Y. K. Kang, 2008. Three- Dimensional Numerical Model for Flow with Silt Protector. Journal of Ocean Engineering and Technology 22(3): 1-7. (in Korean)
  14. Hong, N. S., and J. Y. Kim, 2002. Behavior of Mooring Line of Silt Protector According to the Change of Sea Level. Korean Society of Coastal and Ocean Engineers 14(3): 232-239. (in Korean)
  15. Sato, A., Y. Murota, and Y. Kurumata, 2005. Effectiveness of Silt Protector Frame in Preventing Dispersion of Pollutants by Grab Dredging. The Proceedings of the 16th Yearly Conference of Japanese Society of Civil Engineers. pp.227-228 (in Japanese)
  16. Suh, S. D., D. H. Kim, H. K. Yoon, 1994. Study on the Water Environmental Pollution Sources in the Agricultural Reservoir-Watershed Areas. Journal of the Korean Society of Agricultural Engineers 36(3): 100-112 (in Korean)
  17. Jeon, J. H., C. G. Yoon, J. H. Ham, H. I. Kim, and S. J. Hwang, 2002. Study on the Relationships among Water Quality Parameters in Agricultural Reservoirs. Journal of the Korean Society of Agricultural Engineers 44(3): 136-145 (in Korean)