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Çѱ¹¼öÀÚ¿øÇÐȸ / v.44, no.1, 2011³â, pp.31-40
Çϱ¸µÏ¿¡¼­ÀÇ ÇÏÆøÃà¼Ò ¹æ¹ýÀ» ÀÌ¿ëÇÑ Åð»çÀú°¨ È¿°ú ºÐ¼®
( Analysis for the Effectiveness of Sedimentation Reduction Using the Channel Contraction Method at the Estuary Barrage )
Áö¿î;±è±ÇÇÑ;¿©¿î±¤; ¸íÁö´ëÇб³ Åä¸ñȯ°æ°øÇаú;¸íÁö´ëÇб³ Åä¸ñȯ°æ°øÇаú;¸íÁö´ëÇб³ Åä¸ñȯ°æ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â 2Â÷¿ø Çϻ󺯵¿ ¼öÄ¡¸ðÇüÀÎ CCHE2D ¸ðÇüÀ» ÀÌ¿ëÇÏ¿© ³«µ¿°­Çϱ¸µÏ¿¡¼­ÀÇ Åð»çÀú°¨ ¹æ¾ÈÀ» ºÐ¼®ÇÏ¿´ ´Ù. ÇöÀç ¸Å³â ½ÃÇàµÇ°í ÀÖ´Â Áؼ³¹æ¹ý¿¡ ´ëÇÑ È¿°ú¸¦ Á¤·®ÀûÀ¸·Î ºÐ¼®ÇÏ¿´À¸¸ç Áؼ³¹æ¹ýÀ» ´ëüÇÒ ¼ö ÀÖ´Â Åð»çÀú°¨ ¹æ¹ýÀ¸·Î ÇÏÆøÃà¼Ò¸¦ ÅëÇÑ Åð»çÀú°¨ ¹æ¾È¿¡ ´ëÇØ ¸ðÀǸ¦ ¼öÇàÇÏ¿´´Ù. ºÐ¼®¿¡ »ç¿ëµÈ ¸ðÇüÀº °¢°¢ À¯»ç·® °ø½Ä°ú À¯»çÀÌ¼Û ÇüÅ¿¡ ´ëÇØ ¸ðÇü °Ëº¸Á¤À» ¼öÇàÇÏ¿´À¸¸ç ³«µ¿°­Çϱ¹µÏÀÇ °æ¿ì Ackers and White (1973) °ø½Ä°ú ¼Ò·ù»ç ÇüÅÂÀÇ À¯»çÀÌ¼Û ¹æ½ÄÀ» ¼öÄ¡¸ðÀÇ ½Ã »ç¿ëÇÏ´Â °ÍÀÌ ½ÇÁ¦ Çϻ󺯵¿ °á°ú¿Í °¡Àå À¯»çÇÑ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. °Ëº¸Á¤µÈ CCHE2D ¸ðÇüÀ» ÀÌ¿ëÇÏ¿© ÇöÀç ½ÃÇàµÇ°í ÀÖ´Â Áؼ³¹æ¹ý¿¡ ´ëÇÑ ºÐ¼®À» ¼öÇàÇÏ¿´À¸¸ç ±× °á°ú, Áؼ³ÀÌ ¼öÇàµÈ ±¸°£¿¡¼­ Æò±Õ 0.2mÀÇ ÅðÀû·® °¨¼Ò¸¦ È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ, ÇÏÆøÃà¼Ò¸¦ ÅëÇÑ Åð»çÀú°¨ ºÐ¼® °á°ú, Æò±Õ 0.4mÀÇ Åð»çÀú°¨ È¿°ú°¡ ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç ƯÈ÷ ÇÏÆøÀÌ Ãà¼ÒµÈ ±¸°£¿¡¼­´Â Ãà¼ÒÀü°ú ºñ±³ÇØ ÃÖ´ë 2.0m Á¤µµÀÇ Åð»çÀú°¨ È¿°ú°¡ ÀÖ´Â °ÍÀ¸·Î ºÐ¼®µÇ¾ú´Ù.
In this study, the methods of sedimentation reduction for the estuary barrage were analyzed using the CCHE2D bed change model. Especially, the effectiveness of sediment dredging currently applied in the field was evaluated quantitatively and also the channel contraction method which is a substitute method was analyzed for the Nakdong River Estuary Barrage (NREB). The numerical model was calibrated and validated for the sediment transport equations and transport modes. In the NREB case, the Ackers and White formula and bed load type was the most similar to the field condition. As a results of the dredging simulation, there was the sedimentation reduction effect of 0.2 m in the bed changes. Furthermore, the analysis result of the channel contraction method represented that the sedimentation reduction effects of the average 0.4 m and the maximum 2.0 m were produced.
 
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³«µ¿°­Çϱ¸µÏ;CCHE2D ¸ðÇü;Åð»çÀú°¨;¼öÄ¡¸ðÀÇ;Áؼ³È¿°ú;ÇÏÆøÃà¼Ò;nakdong river estuary barrage;CCHE2D model;sediment reduction;numerical modeling;dredging effect;channel contration;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.44, no.1, 2011³â, pp.31-40
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201107049668123)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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