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http://dx.doi.org/10.9765/KSCOE.2017.29.5.269

Experimental Study on Effectiveness of Wave Reduction and Prevention Erosion of Nourishment Sand Using the Cell Group  

Park, Sang Kil (Dept. of Civil & Environmental Engineering and Green Land & Water Management Research Institute, Pusan National University)
Park, Hong Bum (Dept. of Civil & Environmental Engineering, Graduate School, Pusan National University)
Kim, Young Hwan (Dept. of Civil & Environmental Engineering, Graduate School, Pusan National University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.29, no.5, 2017 , pp. 269-277 More about this Journal
Abstract
Recently, a submerged breakwater has been installing to prevent the erosion of shoreline everywhere. Artificially submerged breakwater is made to minimize the loss of nourishment sand beach erosion. For this reason, it has been indiscriminately constructed submerged breakwater that is planned in the country throughout. However, maintenance purposes to keep the shoreline of the beach is a method that is quite a few problems. There are also disadvantages such as expensive construction costs, ocean space utilization, water pollution and shoreline modification. In addition, person of utilizing the space of the ocean leisure does not like that because of the disconnection of ocean space. The beaches such as Gwanganri are artificially supplying nourishment sand to maintain the beach. The flexible construction method refers to a structure that is installed as a flexible material instead of submerged breakwater to prevent the loss of nourishment sand. In order to develop a new method to mitigate shoreline erosion, this study was carried out a hydraulic model experiment by installing a cell group as an example of the flexible method. Namely, in order to prevent the loss of nourishment sand, we decided to develop a new method that can mitigate the degree of beaches erosion by using cell group instead of submerged breakwater. In the two dimensional fixed hydraulic experiment, was carried out the effect reducing of wave height and the rate of low reflection due to the installation of the cell group. In movable bed experiment, the capture rate of the nourishment sand and the erosion prevention rate of the nourishment sand was performed for stability of shoreline. Therefore, according to the results of the hydraulic tests, it was possible to maintain the stable beaches due to installing the cell group on the erosion beaches, due to the effect of reducing wave height, the low reflection, the erosion prevention rate of nourishment sand, the high capture rate of nourishment sand.
Keywords
specification of cell group; effective of reducing wave height; rate of low reflection; rate of protect erosion of nourishment; capture rate of nourishment sand;
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