BEACH EROSION COUNTERMEASURE USING NEW ARTIFICIAL REEF BLOCKS

Kyuhan Kim, Sungwon Shin, Chongkun Pyun, Hyun Dong Kim, Nobuhisa Kobayashi

Abstract


Two-dimensional and three-dimensional laboratory experiments were conducted to investigate not only the flow mechanism near the submerged breakwater but the performance of two newly developed eco-friendly artificial reef blocks. The results of two-dimensional experiments proved that new artificial blocks (EREEB) showed a better performance than TTP in terms of wave attenuation due to wave breaking turbulence near the crest of the structure. Three-dimensional experiments convinced that installing another type of new artificial block (WERF) in between submerged breakwater reduced the return flow velocity more than 50% compared with the gap between the breakwaters is empty. Therefore, these two types of newly developed artificial reef block can contribute the counter measure of beach erosion and habitat of sea lives.

Keywords


artificial reef block; submerged breakwater; beach erosion; return flow; laboratory experiments

References


A design manual of artificial reef. 2004. National association of coast in Japan (in Japanese),

Kim, K., S. Shin, W. Lim, Y. Moon, and C. Pyun. 2011. An Experimental Study on the Wave Control by Environment-Friendly Artificial Reef. Proceedings of the 6th International Conference on Asian and Pacific Coasts, CD-Rom, Hong Kong, China.


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