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Çѱ¹¼öÀÚ¿øÇÐȸ / v.34, no.1, 2001³â, pp.81-90
µ¿¿ªÇÐÀû È«¼öºóµµ ¸ðÇüÀÇ Àû¿ë ¹× ÇØ»óµµ ¿µÇ⠺м®
( The Application and Analysis of Scale Effect on Dynamic Flood Frequency Analysis )
¹®Àå¿ø;À¯Ã¶»ó;±èÁßÈÆ; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ¼öÀÚ¿øÈ¯°æ¿¬±¸ºÎ;°í·Á´ëÇб³ ȯ°æ°øÇаú;°í·Á´ëÇб³ Åä¸ñȯ°æ°øÇаú;
 
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µ¿¿ªÇÐÀû È«¼öºóµµºÐ¼® ¸ðÇüÀº ¹Ì°èÃøÀ¯¿ª¿¡¼­ÀÇ ºóµµºÐ¼®À» À§ÇØ Á¦¾ÈµÇ¾ú´Ù. º» ¿¬±¸¿¡¼­´Â ÀÌ¿Í °°Àº µ¿¿ªÇÐÀû È«¼öºóµµºÐ¼® ¸ðÇüÀ» Æòâ°­À¯¿ª ³» ÃÑ 6°³ ¼ÒÀ¯¿ª¿¡ Àû¿ëÇÏ¿© º¸¾Ò´Ù. º¸Åë µ¿¿ªÇÐÀû È«¼öºóµµºÐ¼® ¸ðÇüÀº Å©°Ô °­¿ì ¸ðÇü, °­¿ì¼Õ½Ç ¸ðÇü, ±×¸®°í À¯Ãâ ¸ðÇüÀ¸·Î ÀÌ·ç¾îÁ® ÀÖÀ¸¸ç º» ¿¬±¸¿¡¼­´Â Rectangular Pulse ¸ðÇü-SCS À¯È¿À¯·® »êÁ¤¹æ¹ý-ÁöÇü ±âÈÄÇÐÀû ¼ø°£´ÜÀ§µµ(GcIUH)¹æ¹ýÀ¸·Î ÀÌ·ç¾îÁø µ¿¿ªÇÐÀû È«¼öºóµµºÐ¼® ¸ðÇüÀ» ÀÌ¿ëÇÏ¿´´Ù. ÀÔ·ÂÀÚ·á·Î ´ë»ó À¯¿ªÀÇ L-moment¹ý¿¡ ÀÇÇÑ Åë°èÇÐÀû ºóµµºÐ¼® °á°ú¸¦ ÀÌ¿ëÇÏ¿´°í ¸ðÇü¿¡ÀÇ Àû¿ë°á°ú »êÁ¤µÈ ÀçÇö±â°£ °ªÀ» Åë°èÀû ºÐ¼®¿¡ ÀÇÇÑ ÀçÇö±â°£°ú ºñ±³ÇÏ¿´´Ù. ±× °á°ú ÀüüÀûÀ¸·Î µ¿¿ªÇÐÀû È«¼öºóµµ ºÐ¼®ÀÇ °á°ú°¡ Å©°Ô »êÁ¤µÇ°í ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾úÀ¸³ª Æòâ°­À¯¿ªÀÇ °üÃøÀÚ·á ºÎÁ·°ú À¯¿ªÀÇ ¹°¸®Àû Ư¼º¸¸À¸·Î ºóµµºÐ¼®ÀÌ ¼öÇàµÉ ¼ö ÀÖ´Ù´Â Á¡À» °í·ÁÇÏ¸é µ¿¿ªÇÐÀû È«¼öºóµµºÐ¼® ¸ðÇüÀÌ ¹Ì°èÃøÀ¯¿ª¿¡¼­ ¼Ò±Ô¸ð ¼ö°ø±¸Á¶¹°ÀÇ ¼³°è È«¼ö·® »êÁ¤ ½Ã ´ëü¹æ¹ýÀ¸·Î ÀÌ¿ëµÉ ¼ö ÀÖÀ½À» ÆÇ´ÜÇÒ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ ÇØ»óµµÀÇ ¿µÇ⠺м® °á°ú ±×´ÙÁö Å« ¿µÇâÀ» ÁÖ°í ÀÖÁö ¾ÊÀ½À» È®ÀÎÇÒ ¼ö ÀÖ¾úÀ¸¸ç µû¶ó¼­ µ¿¿ªÇÐÀû È«¼öºóµµºÐ¼® ¸ðÇüÀÌ º¸´Ù º¸ÆíÀûÀ¸·Î ÀÌ¿ë °¡´ÉÇÏ´Ù´Â °á·ÐÀ» ¾òÀ» ¼ö ÀÖ¾ú´Ù.
A dynamic flood frequency analysis model was proposed for the frequency analysis in ungaged catchment and applied to 6 subbasins in Pyungchang River basin. As the dynamic flood frequency model requires precipitation, rainfall loss system, and runoff analysis, we adopt the rectangular pulse model, the SCS formula, and the geomorphoclimatic IUH(GcIUH) for the application. Input data for the analysis was borrowed from the results of the statistical flood frequency analysis using L-moment method for the same catchment, and then the return period was estimated using the model. This result was also compared with the return period estimated from the statistical analysis. By comparing with the results from two cases, we found the dynamic flood frequency analysis gave higher estimates than those from statistical analysis for the whole subbasins. However, the dynamic flood frequency analysis model has a potential to be used for determining the design flood for small hydraulic structure in ungaged catchment because it uses only physical parameters for flood frequency analysis. And this model can be easily applicable to other watersheds as the scale effect is negligible.
 
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µ¿¿ªÇÐÀû È«¼öºóµµºÐ¼® ¸ðÇü;Rectangular Pulse ¸ðÇü;SCS ¹æ¹ý;ÁöÇü±âÈÄÇÐÀû ¼ø°£´ÜÀ§µµ(GcIUH);ÇØ»óµµ ¿µÇâ;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.34, no.1, 2001³â, pp.81-90
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920730523)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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