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Çѱ¹¼öÀÚ¿øÇÐȸ / v.37, no.10, 2004³â, pp.857-868
Àú¼öÁö Ç÷¯½Ì ¹æ·ù È¿°úºÐ¼®À» À§ÇÑ ºñÁ¤»ó»óÅ ÇÏõ¼öÁú¸ðÇüÀÇ Àû¿ë
( Application of an Unsteady River Water Quality Model for the Analysis of Reservoir Flushing Effect on Downstream Water Quality )
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°¥¼ö±â µ¿¾È ¿ì¸®³ª¶ó ÇÏõÀÇ ÀÚÁ¤´É·ÂÀº »ó·ù ´ïÀ¸·ÎºÎÅÍ °ø±ÞµÇ´Â ÇÏõÀ¯ÁöÀ¯·®¿¡ Å« ¿µÇâÀ» ¹ÞÀ¸¹Ç·Î, ÇÏõ°ú Àú¼öÁö½Ã½ºÅÛÀÇ ¿î¿µÀº ¼ö·®°ø±ÞÃø¸é»Ó¸¸ ¾Æ´Ï¶ó ÇÏõÀÇ ¼öÁú°ú »ýŰ踦 µ¿½Ã¿¡ °í·ÁÇØ¾ß ÇÑ´Ù. º» ¿¬±¸¿¡¼­´Â ¼öÁú»ç°í¿Í ¾ÇÈ­¿¡ Ãë¾àÇÑ °¥¼ö±â µ¿¾È ´Ù¾çÇÑ ´ï ¹æ·ù ´ë¾ÈÀÌ ÇÏ·ù ¼öÁú¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Æò°¡Çϱâ À§ÇÑ ºñÁ¤»ó»óÅ ÇÏõ¼öÁú¸ðÇüÀÎ KORIV1-WINÀ» °³¹ßÇÏ°í ±Ý°­¼ö°è¿¡ À§Ä¡ÇÑ ´ëû´ï ÇÏ·ù±¸°£À» ´ë»óÀ¸·Î 2002³â 9¿ù°ú 10¿ù¿¡ ½ÇÃøÇÑ À¯·®°ú ¼öÁúÀڷḦ ÀÌ¿ëÇÏ¿© º¸Á¤°ú °ËÁõÀ» °¢°¢ ¼öÇàÇÏ¿´´Ù. ±×¸®°í ´ëû´ïÀÇ ´Ü±â°£ Ç÷¯½Ì ¹æ·ù°¡ ÇÏ·ùÇÏõÀÇ ¼öÁúº¯È­¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Á¶»çÇϱâ À§ÇØ 2003³â 11¿ù22ÀÏ¿¡ ´ï ¹æ·ù·®À» 30 $m^3$/s¿¡¼­ 200 $m^3$/s·Î 6½Ã°£µ¿¾È Áõ°¡½ÃÄÑ ¼ö¸®¿Í ¼öÁú½ÇÇèÀ» ½Ç½ÃÇÏ¿´À¸¸ç, ¸ðÇüÀÇ ¼º´ÉÀ» °ËÁõÇϱâ À§ÇØ Ç÷¯½Ì ¹æ·ù »ç»ó µ¿¾È ÇÏõÀÇ ¼ö¸®Æ¯¼º°ú ¼öÁúº¯È­¸¦ ¸ðÀÇÇÏ°í ½ÇÃøÀÚ·á¿Í ºñ±³ÇÏ¿´´Ù ¸ðÇüÀº ´ï ¹æ·ù·®ÀÇ ÁÖ¿äÁöÁ¡ µµ´Þ½Ã°£°ú ¼öÀ§»ó½ÂÀ» Àß ¸ðÀÇÇÏ¿´À¸¸ç, ¾Ï¸ð´Ï¾Æ¼º Áú¼Ò¿Í ¿ëÁ¸ ÀÎ µî Áú¼Ò¿Í ÀΰèÅëÀÇ ¼öÁúº¯È­µµ ºñ±³Àû Àß ¿¹ÃøÇÏ¿´´Ù. ±×·¯³ª ź¼Ò°è À¯±â¹°Áú·Î ÀÎÇØ ¹ß»ýÇÏ´Â »ê¼Ò¿ä±¸·®ÀÇ ¸ðÀÇ¿¡¼­ ½ÇÃøÀÚ·á¿Í Å« ÆíÂ÷¸¦ º¸¿´À¸¸ç À̰ÍÀº ´ï ¹æ·ù·®ÀÌ ÇÏõÀ» Åë°úÇÒ ¶§ ÇÏõ Àú´ÏÃþÀ¸·ÎºÎÅÍ ÀçºÎ»óÇÑ À¯±â¹°ÁúÀÇ ¿µÇâÀ» ¸ðÇü¿¡¼­ ÀûÀýÈ÷ ¹Ý¿µÇÏÁö ¸øÇÑ ¶§¹®À¸·Î ÆÇ´ÜµÈ´Ù.
Since the self-purification capacity of rivers in Korea is significantly controlled by environmental maintenance flow supplied by upstream reservoirs during drought season, it is obviously important to operate the river and reservoir systems considering not only water quantity aspect but also conservation of downstream water quality and ecosystem. In this study, an unsteady river water quality model KORIVl- WIN was developed as a tool for evaluating the impact. of reservoir operations on the downstream water quality. The model parameters were calibrated and verified using field data obtained in Geum River on September and October of 2002, respectively. Intensive data sampling was performed on November 22, 2003 to investigate the effect of a short-term flushing discharge of Daecheong Reservoir, which increased outflow from 30 $m^3$/s to 200 $m^3$/s for 6 hours, on downstream water quality. The model performance was evaluated by comparing simulated results with observed data including hydraulics, biochemical oxygen demand(BOD$_{5}$), nitrogen and phosphorus species during the flushing event. It showed very good performance in predicting the travel time of flushing flow and water quality variations of dissolved forms of nitrogen and phosphorus species, while revealed large deviations for BOD$_{5}$ possibly due to missing the effect of organic matters resuspension from river bottom sediment during the wave front passage.age.
 
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Àú¼öÁö Ç÷¯½Ì ¹æ·ù;ºñÁ¤»ó»óÅÂ;ÇÏõ ¼öÁú¸ðÇü;´ï ¿î¿µ;KORIV1-WIN reservoir flushing;unsteady water quality model;dam operation;KORIV1-WIN;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.37, no.10, 2004³â, pp.857-868
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922948812)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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