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Çѱ¹¼öÀÚ¿øÇÐȸ / v.40, no.8, 2007³â, pp.655-663
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( Development of a Rainfall Time Distribution Model for Urban Watersheds ) |
ÁÖÁø°É;ÀÌÁ¤È£;Á¶´öÁØ;Àüȯµ·;±èÁßÈÆ; °í·Á´ëÇб³ °ø°ú´ëÇÐ °ÇÃà.»çȸȯ°æ°øÇаú;°í·Á´ëÇб³ °ø°ú´ëÇÐ °ÇÃà.»çȸȯ°æ°øÇаú;µ¿¼´ëÇб³ °ÇÃàÅä¸ñ½Ã½ºÅÛ°øÇкÎ;°í·Á´ëÇб³ BK21»ç¾÷´Ü;°í·Á´ëÇб³ °ø°ú´ëÇÐ °ÇÃà.»çȸȯ°æ°øÇаú;
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º» ¿¬±¸´Â ¸éÀûÀÌ ÀÛÀº µµ½ÃÀ¯¿ª¿¡ Àû¿ëÇϱâ À§ÇÑ °¿ìÀÇ ½Ã°£ºÐÆ÷¹æ¹ýÀ» Á¦¾ÈÇÏ¿´´Ù. À̸¦ À§ÇÏ¿© À¯¿ªÀÇ Æ¯¼ºÀ» °í·ÁÇÑ Interevent Time Definition(ETD) °áÁ¤¹æ¹ý°ú 3½Ã°£ ¹Ì¸¸ÀÇ °¿ì¸¦ Æ÷ÇÔÇÑ ¹«Â÷¿ø ´©°¡¿ì·®°î¼±À» Á¦¾ÈÇÏ¿´´Ù. »õ·Ó°Ô Á¦½ÃµÈ IETD °áÁ¤¹æ¹ýÀº È£¿ì »ç»óÀÇ Á¾·á ½ÃÁ¡À¸·ÎºÎÅÍ Á÷Á¢À¯ÃâÀÇ Á¾·á ½ÃÁ¡±îÁöÀÇ ±â°£À» IETD·Î Á¤ÀÇÇÏ¿´´Ù. Á¦¾ÈµÈ IETD °áÁ¤¹æ¹ýÀ» »ç¿ëÇÏ¿© Áß¶û ¹è¼ö±¸¿ª¿¡ ´ëÇÑ ¸éÀû-IETD °ü°è°î¼±À» À¯µµÇÏ¿´´Ù. Á¦¾ÈµÈ °¿ìºÐÆ÷¸ðÇüÀ» 4°³ÀÇ µµ½Ã À¯¿ª¿¡ Àû¿ëÇÏ¿© 10³âºóµµ 2½Ã°£ °¿ì¸¦ ½Ã°£ºÐÆ÷ ½ÃÄ×À¸¸ç, SWMMÀ» »ç¿ëÇÏ¿© À¯Ãâ¼ö¹®°î¼±À» »êÁ¤ÇÏ¿´´Ù. »êÁ¤µÈ À¯Ãâ¼ö¹®°î¼±À» Huff ¹æ¹ýÀ¸·Î »êÁ¤ÇÑ À¯Ãâ¼ö¹®°î¼±°ú ºñ±³ÇÏ¿´´Ù. ºñ±³ÇÑ °á°ú »õ·Ó°Ô Á¦½ÃµÈ °¿ìÀÇ ½Ã°£ºÐÆ÷ ¹æ¹ý¿¡ ÀÇÇÑ À¯¿ªÀÇ Ã·µÎ È«¼ö·®Àº Huff ¸ðÇü¿¡ ÀÇÇÑ °á°úµéº¸´Ù $11sim15%$Å©°Ô ³ªÅ¸³µÀ¸¸ç, µû¶ó¼ ±âÁ¸ÀÇ Huff ¸ðÇüÀ» µµ½ÃÀ¯¿ª¿¡ ±×´ë·Î Àû¿ëÇÏ´Â °ÍÀº À¯ÃâÀ» °ú¼ÒÆò°¡ ÇÒ À§Ç輺À» ³»Æ÷Çϰí ÀÖ´Ù. |
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This study suggests a new time distribution method of rainfall for small urban watersheds. IETD (Interevent Time definition) determination method considering basin characteristics and dimensionless accumulation rainfall curves involving rainfall events with shorter duration than 3-hours are suggested. A new definition of IETD is the time period from the end of a rainfall event to the end of a direct runoff. Using the method, we drive an area-IETD regression curve for the Joong-Rang basin. The rainfall event with 10 year-return periods, 2-hour duration is distributed and applied four urban watersheds. In the four watersheds, we calculate hydrographs for four watersheds using SWMM and compare them with ones of the Huff's distribution model. From the comparison, we find that peak flows resulted from the developed methodology are $11sim15%$ larger than ones from the Huff's model. As conclusion, the Huff method should be adopted for the urban watersheds with careful verification. |
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Ű¿öµå |
°¿ì½Ã°£ºÐÆ÷;¹«°¿ì½Ã°£;µµ½ÃÀ¯¿ª;Rainfall time distribution;Interevent time definition;Urban watershed; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.40, no.8, 2007³â, pp.655-663
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200734515888301)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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