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Çѱ¹¼öÀÚ¿øÇÐȸ / v.31, no.5, 1998³â, pp.515-528
ÁØ2Â÷¿ø È«¼ö¹ü¶÷ ¸ðÇü¿¡ °üÇÑ ¿¬±¸
( Quasi-Two-Dimensional Model for Floodplain Flow Simulation )
Àü°æ¼ö; ¼º±Õ°ü´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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È«¼öÅÍ È帧ÀÇ ¸ðÀǸ¦ À§ÇÑ ÁØ2Â÷¿ø °è»ê¸ðÇüÀ» ¼ö¸³ÇÏ¿´´Ù. ¸ðÇüÀÇ °è»ê¸ÁÀ¸ 2Â÷¿ø È«¼öÅÍ ±¸È¹Ã¼°è¸¦ Çϵµ¿Í °áÇÕÇÑ °ÍÀ¸·Î¼­ ÀϹÝÀûÀ¸·Î ÆóÇÕÇü ¸ÁÀ¸·Î ±¸¼ºµÈ´Ù. È«¼öÅÍ È帧¿¡ ´ëÇØ¼­´Â °¢ ±¸È¹¿¡¼­ÀÇ ¼ö·®º¸Á¸¿¡ °üÇÑ ¿¬¼Ó¹æÁ¤½Ä ¹× ÀÎÁ¢±¸È¹°£ ÇϵµÇü ¶Ç´Â ¿ù·ùÇü ¼öÀ§-À¯·® °ü°è½ÄÀ», ÇÏõ º»·ù¿¡ ´ëÇØ¼­´Â 1Â÷¿ø ºÎÁ¤·ù¿¡ ´ëÇÑ St.Venant ¹æÁ¤½ÄÀ» °¢°¢ Áö¹è¹æÁ¤½ÄÀ¸·Î ÇÏ¿© È帧À» ¸ðÀÇÇÏ´Â ÁØ2Â÷¿ø °è»ê¸ðÇüÀ¸·Î¼­, ÆóÇÕÇü ÇÏõ¼ö°è¿¡ ´ëÇÑ ºÎÁ¤·ù ÇØ¼® ¼öÄ¡±â¹ýÀ» È«¼öÅÍ È帧±îÁö Æ÷ÇÔÇϵµ·Ï È®ÀåÇÔÀ¸·Î½á ÇÏõ º»·ù ¹× È«¼öÅÍ È帧À» µ¿½Ã¿¡ ¸ðÀÇÇÒ ¼ö ÀÖ´Â ¼öÄ¡¸ðÇüÀ» °³¹ßÇÏ¿´´Ù. °³¹ßµÈ ¸ðÇüÀ» ¿©·¯ °ËÁõ¹®Á¦¿¡ Àû¿ëÇÏ¿© ¸ðÇüÀÇ Àû¿ë¼ºÀ» Á¶»çÇÏ¿´À¸¸ç, °¢Á¾ ¸ðÇüÀÇ ¸Å°³º¯¼öµé¿¡ °üÇÑ ¹Î°¨µµ ºÐ¼®À» ¼öÇàÇÏ¿´´Ù. È帧´Ü¸éÀÇ Çü»óÀÌ º¹ÀâÇÏ°í ºÒ±ÔÄ¢ÀûÀϼö·Ï º» ¸ðÇüÀÌ Cunge(1975)ÀÇ °æ¿ìº¸´Ù Á¤È®ÇÑ °è»ê°á°ú¸¦ ³ªÅ¸³»¾úÀ¸¸ç, ÇÏõ º»·ù·ÎºÎÅÍ È«¼öÅÍ·ÎÀÇ ¹ü¶÷Àº ¹°·Ð, º»·ù·ÎÀÇ ÀçÀ¯ÀÔ, Áï È帧¹æÇâÀÌ ¹ÝÀüµÇ´Â Çö»óÀÌ Àß ¸ðÀǵǾú´Ù. Çٽɿë¾î : È«¼öÅÍ È帧, ÁØ2Â÷¿ø ¼öÄ¡¸ðÇü, ÆóÇÕÇü °è»ê¸ðÇü
A quasi-two-dimensional model for simulating the flood plain flow is developed. The model consists, in general, of a multiply-connected network which combines the main channel and two-dimensional flood plain cells. The main channel flow is described by the Saint Venant equations for one-dimensional unsteady flow, and the flood plain flow by the cell continuity and river-or weir-type stage-discharge relations between flood plain cells. The implicit algorithm for unsteady flow in looped channel network is extended to incorporate the flood plain flow. To verify the performance of the model, it is applied to three test problems, and sensitivities to various model parameters are analyzed. It turns out that the present model gives more accurate result than that by Cunge (1975) as the shape of cross section becomes more complex and irregular. Not only the inundation of water from the main channel but the return flow from the flood plain is successfully simulated. Keywords : flood plain flow, quasi-two-dimensional model, looped-network model.
 
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È«¼öÅÍ È帧;ÁØ2Â÷¿ø ¼öÄ¡¸ðÇü;ÆóÇÕÇü °è»ê¸ðÇü;flood plain flow;quasi-two-dimensional model;looped-network model;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.31, no.5, 1998³â, pp.515-528
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199811920101191)
¾ð¾î : ¿µ¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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