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Çѱ¹¼öÀÚ¿øÇÐȸ / v.43, no.2, 2010³â, pp.139-151
Ⱦ¿ù·ùÇü °­º¯Àú·ùÁö¸¦ Æ÷ÇÔÇÏ´Â ÇÏõ¼ö°è¿¡ ´ëÇÑ ¼ö¸®ÇÐÀû °è»ê¸ðÇü
( Computational Model for Flow in River Systems Including Storage Pockets with Side Weirs )
Àü°æ¼ö;±èÁø¼ö;±è¿ø;À±º´¸¸; ¼º±Õ°ü´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇаú;¼º±Õ°ü´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇаú ´ëÇпø;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ¼öÀÚ¿ø¿¬±¸ºÎ;¸íÁö´ëÇб³ Åä¸ñȯ°æ°øÇаú;
 
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Ⱦ¿ù·ù½Ä °­º¯Àú·ùÁö¸¦ Æ÷ÇÔÇÏ´Â ÇÏõ¼ö°èÀÇ È帧 ¸ðÀǸ¦ À§ÇÑ ÁØ2Â÷¿ø ºÎÁ¤·ù °è»ê¸ðÇüÀ» ¼ö¸³ÇÏ¿´´Ù. ¼ö¸³µÈ ¸ðÇüÀº Ⱦ¿ù·ù È帧¿¡ ´ëÇØ¼­´Â ¼ö·®º¸Á¸¿¡ °üÇÑ ¿¬¼Ó¹æÁ¤½Ä ¹× ¿ù·ùÇü ¼öÀ§-À¯·® °ü°è½ÄÀ», Çϵµ¿¡ ´ëÇØ¼­´Â 1Â÷¿ø St. Venant ¹æÁ¤½ÄÀ» °¢°¢ Áö¹è¹æÁ¤½ÄÀ¸·Î ÇÏ¿© È帧À» ¸ðÀÇÇÏ´Â ÆóÇÕÇü °è»ê¸ðÇüÀÌ´Ù. ¼ö¸³µÈ ¸ðÇüÀ» ÇöÀç °èȹ ÁßÀÎ ±º³² È«¼öÁ¶ÀýÁöºÎÅÍ ÇѰ­ ÇÕ·ù ÁöÁ¡±îÁöÀÇ ÀÓÁø°­ ±¸°£¿¡ ´ëÇÏ¿© Àû¿ëÇÏ¿´´Ù. Ⱦ¿ù·ù À§¾îÀÇ À¯·®°è¼ö¿¡ ´ëÇÑ ¹Î°¨µµ ºÐ¼® °á°ú, ÃÖ´ëÀ¯·® ¹× ¼öÀ§ÀÇ Àú°¨È¿°ú´Â À¯·®°è¼ö¿¡ °ü°è¾øÀÌ °ÅÀÇ ÀÏÁ¤ÇÑ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¼ö°è ÇÏ·ù Ãø¿¡ À§Ä¡ÇÑ °­º¯Àú·ùÁöÀϼö·Ï ¹è¼ö¿µÇâÀÌ Ä¿Áö¹Ç·Î ÷µÎ È«¼öÀ§ÀÇ °¨¼ÒÈ¿°ú´Â ÁÙ¾îµå´Â °ÍÀ¸·Î ¸ðÀǵǾú´Ù. °­º¯Àú·ùÁöÀÇ È«¼öÀú°¨ È¿°ú´Â Á¶µµ°è¼ö¿¡ µû¶ó Å©°Ô ´Þ¶óÁö¸ç Ⱦ¿ù·ù À§¾îÀÇ Á¤ºÎÇ¥°í°¡ ³ôÀ»¼ö·Ï Á¶µµ°è¼ö¿¡ µû¸¥ È«¼öÁ¶Àý È¿°úÀÇ ºÒÈ®½Ç¼ºÀÌ Ä¿Áö´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. °­º¯Àú·ùÁöÀÇ ¼³°è¸¦ À§Çؼ­´Â Á¶µµ°è¼öÀÇ ÀûÀýÇÑ ÃßÁ¤°úÁ¤ÀÌ ¼±ÇàµÇ¾î¾ß ÇÔÀº ¹°·ÐÀ̰í, ÃßÁ¤µÈ Á¶µµ°è¼öÀÇ ºÒÈ®½Ç¼ºÀ» °¨¾ÈÇÏ¿© Ⱦ¿ù·ù À§¾îÀÇ Á¤ºÎÇ¥°í¸¦ °áÁ¤Çϱâ À§ÇÑ ¹æ¹ýÀÇ °³¹ßÀÌ ÇÊ¿äÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
A quasi-two-dimensional unsteady flow model was developed for simulating the flow in a river system including artificial storage pockets with side weirs. It is a multiply-connected network which combines channels and storage pockets. The channel flow is described by the one-dimensional Saint Venant equations, and the weir overflow flow by the cell continuity and stage-discharge relations. The model was applied to the Imjin river system including six artificial storage pockets. Design flood peak reduction due to storage pockets is not sensitive to the side weir discharge coefficient. Storage pockets downstream are less effective than upstream ones in reducing peak stage as the backwater effect becomes more dominant. Simulated flood control effect is highly sensitive to the roughness coefficient. The uncertainty due to the roughness coefficient increases as the weir crest elevation gets higher. Because the best design alternative varies with the roughness coefficient, proper estimation of it is essential to the design of side weirs. Moreover, uncertainty of the estimation needs to be considered in the design process.
 
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°­º¯Àú·ùÁö;Ⱦ¿ù·ù À§¾î;ºÎÁ¤·ù °è»ê¸ðÇü;ÀÓÁø°­;artificial storage pocket;side weir;unsteady flow model;Imjin River;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.43, no.2, 2010³â, pp.139-151
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201007633730103)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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