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Çѱ¹¼öÀÚ¿øÇÐȸ / v.43, no.3, 2010³â, pp.283-294
µ¿Àû¼öÁúÇØ¼®¸ðÇüÀÇ °³¹ß°ú ³«µ¿°­¿¡ÀÇ Àû¿ë
( Development and Application of Dynamic Water Quality Model in Nakdong River )
±Ç³ª¿µ;ÃÖÇö±¸;À¯ÀçÁ¤;ÇѰǿ¬; °æºÏ´ëÇб³ °ø°ú´ëÇÐ °ÇÃà.Åä¸ñ°øÇкÎ;°æºÏ´ëÇб³ °ø°ú´ëÇÐ °ÇÃà.Åä¸ñ°øÇкÎ;±¹¸³È¯°æ°úÇпø ³«µ¿°­¹°È¯°æ¿¬±¸¼Ò;°æºÏ´ëÇб³ °ø°ú´ëÇÐ °ÇÃà.Åä¸ñ°øÇкÎ;
 
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º» ¿¬±¸ÀÇ ¸ñÀûÀº ÀúÀ¯·®¿¡¼­ ¹ß»êÇÏ´Â ¹®Á¦¸¦ ÇØ°áÇÏ¿© ´Ù¾çÇÑ È帧°ú ºÒ±ÔÄ¢ÇÑ Çϵµ´Ü¸éÀ» ¹Ý¿µÇÏ´Â ¾ÈÁ¤ÀûÀ̰í Á¤±³ÇÑ µ¿Àû¼öÁúÇØ¼®¸ðÇüÀ» °³¹ßÇϴµ¥ ÀÖ´Ù. ÀÌ¿¡ º» ¿¬±¸¿¡¼­´Â ±âÁ¸ ¸ðÇüµéÀÇ ÀúÀ¯·®¿¡¼­ ¹ß»êÇÏ´Â ¹®Á¦¸¦ ÇØ°áÇϰíÀÚ È®»êÆÄ ¿îµ¿¹æÁ¤½Ä ±â¹ýÀ» ÀÌ¿ëÇÏ¿© ¼ö¸®Çؼ®¸ðÇüÀÎ DyHYD¸¦ °³¹ßÇÏ¿´À¸¸ç, ¼öÁúÇØ¼®¸ðÇüÀº ÀÚ»ý BOD¿Í ¼ö¿Â, DO, TN, TP µî 12°¡Áö ¼öÁú³óµµ¸¦ °è»êÇÒ ¼ö ÀÖ´Â DyQUALÀ» °³¹ßÇÏ¿´´Ù. °³¹ßµÈ ¸ðÇüÀÇ Àû¿ë¼ºÀ» °ËÅäÇϱâ À§ÇÏ¿© °¡»óÇϵµ ¹× ½ÇÁ¦ ³«µ¿°­À¯¿ª¿¡¼­ ¸ðÀǸ¦ ¼öÇàÇÑ ÈÄ ½ÇÃøÄ¡¿Í ºñ±³ °ËÅäÇÔÀ¸·Î½á ¸ðÇüÀÇ Àû¿ë¼º°ú ½Å·Ú¼ºÀ» °ËÅäÇÏ¿´´Ù. ¸ðÇüÀÇ ¼öÇà°á°ú¸¦ °üÃøÄ¡¿ÍÀÇ ºñ±³¸¦ ÅëÇØ Nash-Sutcliffe °è¼ö¸¦ »êÁ¤ÇÏ¿´À¸¸ç, º¸Á¤°úÁ¤¿¡¼­´Â À¯·®°ú BOD, TN, TPÀÇ Nash-Sutcliffe °è¼ö´Â 0.391¿¡¼­ 0.591ÀÇ ¹üÀ§¸¦ ³ªÅ¸³»¸ç, °ËÁõ°úÁ¤¿¡¼­´Â 0.704¿¡¼­ 0.902ÀÇ ¹üÀ§¸¦ ³ªÅ¸³»¾ú´Ù.
The objective of this study is to develop an accurate and stable dynamic water quality model which is capable of reflecting various flows and irregular cross sections and handling numerical oscillations under the low flow conditions. In order to solve the oscillation problem under the low flow conditions, diffusive wave method was applied to the low flow condition in developing a hydraulic model, DyHYD. DyQUAL is also developed as a water quality model to calculate up to 12 water quality variables including autochthonous BOD, water temperature, DO, TN and TP. The developed model is applied to both hypothetical river channels and actual Nakdong river watershed. Additionally, the applicability and reliability of the models are verified by comparing simulation results with observed values. Nash-Sutcliffe coefficients are estimated by comparison between simulation results and observed values. In the calibration and verification process, the coefficients varies from 0.391 to 0.591 and 0.704 to 0.902 for discharge, BOD, TN and TP, respectively.
 
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µ¿Àû¼öÁúÇØ¼®;³«µ¿°­;DyHYD;DyQUAL;Dynamic water quality model;Nakdong river;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.43, no.3, 2010³â, pp.283-294
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201010250392753)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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