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Çѱ¹¼öÀÚ¿øÇÐȸ / v.13, no.2, 1980³â, pp.35-47
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Æó¼±Çü°è·Î º» À¯¿ª´ëÇ¥ ´ÜÀ§À¯·®µµÀÇ À¯µµ¸¦ À§ÇÑ ¾Ë°í¸®ÁòÀÇ °³¹ß¿¡ °üÇÑ ¿¬±¸
( A Stiudy on the Deveplopment of Algorithm for the Representative Unit Hydrograph of a Watershed as a Closed Linear System. ) |
| ±èÀçÇÑ;ÀÌ¿øÈ¯; º»ÇÐȸ Á¤È¸¿ø Ãæ³²´ëÇб³ °ø¾÷±³À°´ëÇÐ Åä¸ñ±³À°°øÇаú Á¶±³¼ö(°ø¹Ú);º»ÇÐȸ ºÎȸÀå ¿¬¼¼´ë °ø´ë ±³¼ö(°ø¹Ú);
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| º» ¿¬±¸´Â À¯¿ªÀ» Æó¼±Çü°è·Î º» °¿ì¿Í À¯Ãâ°£ÀÇ ÇØ¼®À¸·ÎºÎÅÍ 1½Ã°£´ëÇ¥´ÜÀ§À¯·®µµ¸¦ À¯µµÇϱâ À§ÇÑ ¾Ë°í¸®ÁòÀ» °³¹ßÇÑ °ÍÀÌ´Ù. ´ÜÀ§µµ À¯µµ¿¡ ÇÊ¿äÇÑ ±âÀúÀ¯Ãâ°ú Á÷Á¢À¯ÃâÀÇ ºÐ¸®´Â º» ¿¬±¸¿¡¼ °³¹ßµÈ ´Ùº¯±¼°î¹ý¿¡ ÀÇÇÏ¿´À¸¸ç, Á¾·¡ÀÇ ¹æ¹ýµé¿¡ ºñÇØ ºñ±³Àû ÁÁÀº °á°ú¸¦ ÁÖ¾ú´Ù. Ãʰú¿ì·®ÀÇ »êÁ¤À» À§Çؼ´Â $Phi$ index ¹ýÀÇ °³³äÀ» °¢ ½Ã°£º°·Î Àû¿ëÇÏ´Â ¼öÁ¤ $Phi$ index ¹ýÀ» °³¹ß Àû¿ëÇÔÀ¸·Î½á Á¾·¡ÀÇ $Phi$ index ¹ýÀÇ ¾àÁ¡À» º¸¿ÏÇÒ ¼ö ÀÖ¾ú´Ù. ÀÌ¿Í °°Àº ¹æ¹ýÀ¸·Î Á÷Á¢À¯Ãâ°ú ÀÌ¿¡ »óÀÀÇÏ´Â Ãʰú¿ì·®À» °áÁ¤ÇÑ ÈÄ °¢ È£¿ìÁý´Üº°·Î 1½Ã°£´ÜÀ§µµÀÇ ½Ã°£º° Á¾°Å¸¦ ½Ã»ê¿¡ ÀÇÇØ °áÁ¤Ç쵂 °üÃø¼ö¹®°î¼±À» À翬Åä·Ï ÇÔÀ¸·Î½á ±¸°£º° Áö¼öÇÔ¼öÇüÀÇ ´ÜÀ§µµ¸¦ À¯µµÇÏ¿´´Ù. º» ¿¬±¸ÀÇ Å¸´ç¼º °ËÁ¤À» À§ÇÏ¿© ³«µ¿°ÀÇ ³²ÇÏ ¹× µ¿ÃÌ ÁöÁ¡°ú ±Ý°ÀÇ ¿ë ´ã ÁöÁ¡ÀÇ 1½Ã°£´ëÇ¥´ÜÀ§µµ¸¦ À¯µµÇÏ°í ±× °á°ú¸¦ ÇÕ¼º´ÜÀ§µµ¹ý ¹× Nakayasu ¹æ¹ý¿¡ ÀÇÇÑ °á°ú¿Í ºñ±³ °ËÅäÇÏ¿´À¸¸ç, ´ÜÀ§µµÀÇ À¯µµ¿¡ »ç¿ëÇÏÁö ¾ÊÀº È£¿ì»ç»ó¿¡ ´ëÇÏ¿© À¯µµµÈ 1½Ã°£ ´ëÇ¥´ÜÀ§µµ¸¦ Àû¿ëÇÔÀ¸·Î½á °üÃøÄ¡¿Í »êÁ¤Ä¡¸¦ ºñ±³ÇÏ¿´´Ù. º» ÇØ¼®ÀÇ ÀϹÝȸ¦ À§ÇÏ¿© ÁÖ ÇÁ·Î±×·¥°ú 3°³ÀÇ ºÎ ÇÁ·Î±×·¥(Ãʰú¿ì·® »êÁ¤, ȸ¼±´©Àû, Å©±â¹è¿)À¸·Î ±¸¼ºµÇ¾îÁø ÄÄÇ»ÅÍ ÇÁ·Î±×·¥À» °³¹ßÇÏ¿´À¸¸ç, ÀÌ ÇÁ·Î±×·¥Àº Ÿ À¯¿ª¿¡ ±×´ë·Î Àû¿ëÀÌ °¡´ÉÅä·Ï µÇ¾î ÀÖ´Ù. |
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| An algorithm is developed to derive a representative I hr-unit hydrograph through an analysis of rainfall-runoff relations of a watershed as a closed system. For the base flow seperation of a flood hydrograph the multi-deflection method is proposed herein, which gace better results compared with those by the existing empirical methods. A modified $Phi$index method is also proposed in this stidy to determine the time distribution rainfall excess of a rainstorm, which is essetially a modification of the commonly used $Phi$index method of rainfall seperation. With the so-obtained rainfall excess hyetograph and the direct runoff hydrograph a trial and error computation of the ordinates of 1 hr-unit hydrograph was executed in such a manner that the synthesized flood hydrograph closely approximates the observed one, thus resulting a unit hydrograph of a piecewise exponential function type. To verify the validity of this study the 1 hr-unit hydrographs for the Imha and Dongchon in Nagdong River basin, and Yongdam in Geum River basin were derived by this algorithm, and the results were compared with those by the conventional synthetic unit hydrograph method and the Nakayasu method. Besides, the validity of this stiudy was also tested by comparing the observed hydrograph with the one computed by applying the unit hydrograph to a specific rainfall event. To generalize the result of this study a computer program, consisited of a main and three subprograns (for rainfall excess estimation, convolution summation, and sorting), is developed as a package, which is believed to be applicable to other watersheds for the similar purpose as those in this study. |
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.13, no.2, 1980³â, pp.35-47
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO198011920089731)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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