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Çѱ¹¼öÀÚ¿øÇÐȸ / v.37, no.9, 2004³â, pp.707-718
¼ö°ø±¸Á¶¹° ¼³°è¸¦ À§ÇÑ PMF ¹× ÀÓ°èÁö¼Ó½Ã°£ ºÐ¼®
( An Analysis of PMF and Critical Duration for Design of Hydraulic Structure )
ÀÌ»óÁø;ÃÖÇü;½ÅÈñ¹ü;¹Ú»ó±æ; Çѱ¹¼öÀÚ¿ø°ø»ç ¼öÀÚ¿ø¿¬±¸¿ø;ºÎ»ê´ëÇб³ °ø°ú´ëÇÐ »ý»ê±â¼ú¿¬±¸¼Ò;»ï¾È°Ç¼³±â¼ú°ø»ç ¼öÀÚ¿ø»ç¾÷ºÎ;ºÎ»ê´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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ÃÖ±Ù ºó¹øÇÑ ±â»óÀ̺¯¿¡ µû¶ó ¹ß»ýµÇ´Â ÀÚ¿¬ÀçÇØ¿¡ ´ëÇÑ ¹æÀç´ëÃ¥ÀÇ Áß¿äÇÔÀÌ Àý½ÇÈ÷ ¿äûµÇ´Â ½ÃÁ¡¿¡¼­ ¼ö°ø±¸Á¶¹°µéÀÇ ¼³°èºóµµ¸¦ »óÇâÁ¶Á¤ÇÏ´Â µîÀÇ ´ëÃ¥ÀÌ ¸¶·ÃµÇ°í ÀÖ´Â ½ÇÁ¤À» °í·ÁÇÏ¿© À¯¿ªÀÇ ¼ö¹®ÇÐÀû ¾ÈÁ¤¼ºÀ» È®º¸Çϱâ À§ÇÑ ÃÖÀû¹æ¾ÈÀ» ¸¶·ÃÇϴµ¥ ÇÊ¿äÇÑ °­¿ìÀÇ ÀÓ°èÁö¼Ó½Ã°£ °áÁ¤¿¡ ´ëÇÑ ¿¬±¸¸¦ ¼öÇàÇÏ¿´´Ù. ƯÈ÷ 2002³â ¿©¸§ °­¸ªÁö¿ª¿¡ ¹ß»ýÇÑ ÅÂdz "·ç»ç"·Î ÀÎÇÑ ÁýÁßÈ£¿ì´Â ±âÁ¸ PMP ±Ô¸ð¸¦ ÃʰúÇÏ´Â »ç»ó ÃÊÀ¯ÀÇ 24½Ã°£ ÃÖ´ë °­¼ö·®(880mm)À» ±â·ÏÇÏ¿© ´ï¼³°è±âÁØ¿¡ ´ëÇÑ Àç°í°¡ ºÒ°¡ÇÇ ÇÏ°Ô µÇ¾ú´Ù. È«¼öÁ¦¾î¸¦ À§ÇÑ ¼ö°ø±¸Á¶¹°Àº ±× Ư¼º»ó °èȹȫ¼ö·® °áÁ¤¿¡ ÃÖ´ëÄ¡ °³³äÀÌ µµÀԵǾî¾ß ÇϹǷÎ, ¼³°è°­¿ìÀÇ Áö¼Ó±â°£À» °áÁ¤ÇÒ °æ¿ì °­¿ì·Î ÀÎÇÑ ÃÖ´ëÀ¯Ãâ°ú È«¼öÃÑ·®ÀÌ ÃÖ´ë°¡ µÇ´Â ÀÓ°èÁö¼Ó½Ã°£À» ÀÌ¿ëÇÏ¿© °ËÅäÇÏ´Â °ÍÀÌ ÇÊ¿äÇÏ´Ù º» ¿¬±¸¿¡¼­´Â ÇÕ¼º´ÜÀ§µµ(Clark¹æ¹ý, Nakayasu¹æ¹ý, SCS¹æ¹ý)µî °¢ ¼ö¹®¿ä¼Ò¿¡ µû¸¥ ÀÓ°èÁö¼Ó½Ã°£ÀÇ º¯µ¿¾ç»óÀ» ÆÄ¾ÇÇÑ °á°ú 24½Ã°£ °­¿ìÁö¼Ó½Ã°£½Ã ÃÑÀ¯Ãâ·® º¸´Ù ÀÓ°èÁö¼Ó½Ã°£°³³äÀ¸·Î »êÁ¤ÇÑ À¯Ãâ·®ÀÌ Å©°Ô »êÃâµÇ¾úÀ¸¸ç, PMP½Ã Àû¿ëµÈ ½Ã°£ºÐÆ÷¸ðÇü (Huff 4ºÐÀ§¹ý, IDF°î¼± ºÐÆ÷¹ý, Mononobe¹æ¹ý)º° ÀûÇÕ¼ºÀ» ±â¿ÕÃÖ´ë ½ÇÃøÄ¡¿Í ºñ±³¤ýÆò°¡ÇÔÀ¸·Î½á ¼ö¹®¼³°è½Ã Ȱ¿ë ÇÒ ¼ö ÀÖ´Â ÀڷḦ Á¦½ÃÇϰíÀÚ ÇÏ¿´´Ù.
This study is to analyze the Probable Maximum Flood(PMF) as a part of counterplan for the disaster prevention of hydraulic structures such as dams, according to recent unfavorable weather conditions. During the period of typhoon RUSA in August 2002, the rainfall recorded in Gang-loeng Province was 880mm a day and exceeded the scale of PMP made in 2001. Accordingly, the reconsideration of hydrologic criteria for dam design was inevitable. In the design of dams for flood controls, the design flood must be determined by introducing the concept of maximum values. When the duration of design rainfall is determined, it needs to use the critical duration which causes the maximum flood by the maximum runoff. In this study, we Investigate the variation of critical duration with hydrologic parameters used in three different synthetic unit hydrographs(Clark, Nakayasu and SCS methods). As a result, the total runoff calculated from 24-hour duration is larger than that calculated from the critical duration. We calculate also the hydrographs with three different time distribution models(Huff's 4-quartile, IDF curve and Mononobe) and compare those with measured hydrograph data. From this comparison, we propose that the Huff's 4-quartile model must be used to obtain the desirable data in the hydrologic design of dams.
 
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ÀÓ°èÁö¼Ó½Ã°£;½Ã°£ºÐÆ÷¸ðÇü;´ÜÀ§µµ;PMP;PMF;critical duration;time distribution model;unit hydrograph;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.37, no.9, 2004³â, pp.707-718
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200413842112901)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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