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Çѱ¹¼öÀÚ¿øÇÐȸ / v.39, no.11, 2006³â, pp.961-968
¼Ò±Ô¸ð Ç׸¸ÀÇ Åð»ç±â±¸¿¡ °üÇÑ ¿¬±¸
( A Study of Siltation in a Small Harbor )
À±¼ºÁø;±è±ÔÇÑ; °üµ¿´ëÇб³ ÷´ÜÇØ¾ç°ø°£°³¹ß¿¬±¸¼¾ÅÍ;°üµ¿´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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¼Ò±Ô¸ð Ç׸¸Àº ÁÖ·Î ¼âÆÄ´ë ±Ù¹æ¿¡ °Ç¼³µÇ´Â °æ¿ì°¡ ¸¹±â ¶§¹®¿¡ Ç¥»çÀ̵¿¿¡ ÀÇÇÑ ÅðÀû¿µÇâ¿¡ ÀÇÇØ Ç׳»¸Å¸ôÀÌ ¹ß»ýµÉ °¡´É¼ºÀÌ Å©´Ù. º» ¿¬±¸¿¡¼­´Â Æò¸é¼öÁ¶¸¦ ÀÌ¿ëÇÑ ¼ö¸®¸ðÇü½ÇÇèÀ» ÅëÇØ, Åõ°úÇü¹æÆÄÁ¦¸¦ ÀûÀýÈ÷ ¼³Ä¡ÇÒ °æ¿ì¿¡ À־ÀÇ ¼Ò±Ô¸ð Ç׸¸ÀÇ Ç×ÀÔ±¸ºÎ ¹× Ç׳»·ÎÀÇ Ç¥»çÀ̵¿¿¡ ´ëÇÑ ¸ÞÄ«´ÏÁòÀ» ÆÄ¾ÇÇϰíÀÚ ÇÏ¿´´Ù. ¿ì¼±, Ç׳»ÀÇ Áøµ¿ÀÌ 1Â÷ ¸ðµåÀÏ ¶§ Ç¥»çÀ̵¿ÀÌ Áõ°¡µÇ´Â °ÍÀ» ½ÇÇèÀûÀ¸·Î È®ÀÎÇÏ¿´´Ù. ¶ÇÇÑ, ÀÔ»çÆÄÀÇ ÁֱⰡ ´ÜÁÖ±âÀÏ °æ¿ì¿¡´Â Ç׳»ÀÇ Áøµ¿ÀÌ °íÂ÷ ¸ðµå°¡ µÇ°í, Ç׳»ÃøÀ¸·ÎÀÇ Ç¥»çÀ̵¿Àº °¨¼ÒµÇ´Â °æÇâÀ» ³ªÅ¸³»¾ú´Ù. ºÎ(Üù)¹æÆÄÁ¦ ¼±´Ü¿¡¼­ ¹ß»ýµÇ´Â ¿Í·ù°¡ Ç׳»·ÎÀÇ Ç¥»çÀ̵¿ÀÇ ÁÖµÈ ¿øÀÎÀÎ °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú°í, ºÎ¹æÆÄÁ¦ ¼±´Ü ¿ÜÃø¿¡ ¼Òµ¹Á¦¸¦ ¼³Ä¡ÇÔÀ¸·Î½á ¿Í·ù¸¦ °¨¼Ò½ÃÄÑ Ç׳»·ÎÀÇ Ç¥»çÀ̵¿À» ¾ïÁ¦ÇÏ´Â È¿°ú°¡ ÀÖ´Â °ÍÀ» È®ÀÎÇÏ¿´´Ù.
Since a small harbor is often located near surf zone areas which have great influences of sediment transport, there is a great possibility that the sediment will be deposited inside of the harbor. The sediment transport occurring around the harbor entrance can't be explained by the wind wave and wave induced current. In this study, it was investigated the mechanism of the entrainment of sediment into a small harbor with permeable breakwater using hydraulic experiments in 3D wave basin. It is found out that the significant sediment entrainment produced when the mode of oscillation in the harbor became the 1st mode. In the case where the incident wave period was shorter than the period that caused higher mode oscillation in harbor, only a little amount of sediment entrainment took place. The vortex shedding from the top of secondary breakwater played very important roll in the entrainment of sediment into the harbor. It is also found that the small jetty attached at the top of secondary breakwater could effectively prevent the entrainment of sediment into the harbor.
 
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Ç¥»çÀ̵¿;Åõ°úÇü¹æÆÄÁ¦;Áøµ¿¸ðµå;¿Í·ù;ºÎ¹æÆÄÁ¦;Sediment transport;Permeable breakwater;Mode of oscillation;Vortex shedding;Secondary breakwater;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.39, no.11, 2006³â, pp.961-968
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200604623537799)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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