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Çѱ¹¼öÀÚ¿øÇÐȸ / v.36, no.4, 2003³â, pp.673-689
»çÇàÇÏõ¿¡¼­ ȾȥÇÕ¿¡ °üÇÑ ÃßÀûÀÚ ½ÇÇè
( Tracer Tests on Transverse Mixing in Meandering Streams )
¼­ÀÏ¿ø;¹é°æ¿À;ÀüŸí;ÁøÁØÇÏ; ¼­¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;¼­¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;¼­¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;Çѱ¹¿øÀڷ¿¬±¸¼Ò;
 
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»çÇàÀÌ ÀÖ´Â ÀÚ¿¬ÇÏõ¿¡¼­ ȾȥÇÕ Æ¯¼ºÀ» ºÐ¼®Çϰí Á¾¤ýȾºÐ»ê°Ô¼ö¸¦ »êÁ¤Çϱâ À§ÇØ ÇöÀå½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù. À̸¦ À§ÇØ ³²ÇѰ­ Áö·ùÀÎ ¼¶°­ ¹× û¹Ìõ¿¡¼­ »çÇ౸°£À» ¼±Á¤ÇÏ¿© À¯¼Ó°ú ¼ö½É ÃøÁ¤ ¹× ÃßÀûÀÚ½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ÃßÀûÀڷμ­´Â ¹Ì·®À¸·Îµµ °üÃøÀÌ ¿ëÀÌÇÑ ¹æ»ç¼º µ¿À§¿ø¼Ò¸¦ »ç¿ëÇÏ¿´À¸¸ç ÁÖÀÔÀº ¼ø°£. Á¡ÁÖÀÔ Á¶°ÇÀ» ¹Ù¶ú´Ù. À̸¦ ÅëÇØ ÃëµæµÈ ¼ö¸®·® ¹× ³óµµ ÀڷḦ ÀÌ¿ëÇÏ¿© Á¾¤ýȾºÐ»ê°è¼ö¸¦ »êÁ¤ÇÏ¿´°í, À̵éÀ» ±âÁ¸ÀÇ ÃßÁ¤½Ä¿¡ ÀÇÇÑ °á°ú¿Í ºñ±³, ºÐ¼®ÇÏ¿´´Ù. Á¾ºÐ»ê°è¼ö´Â ÇØ¼®Çظ¦ ÅëÇØ »êÁ¤ÇÏ¿´´Âµ¥ ¼¶°­Àº ¾à0.5 $m^2$/s, û¹ÌõÀº 0.2 $m^2$/s ·Î »êÁ¤µÇ¾ú´Ù. ȾºÐ»ê°è¼ö´Â ÇØ¼®ÇØ ¹× ¸ð¸àÆ®¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© »êÁ¤ÇÏ¿´´Âµ¥, ¼¶°­Àº ¾à 0.01-0.06 $m^2$/sÀÇ ¹üÀ§¸¦ °¡Áö¸ç û¹ÌõÀº ¾à 0.0l-0.05 $m^2$/sÀÇ ¹üÀ§¸¦ °®´Â °ÍÀ¸·Î »êÁ¤µÇ¾ú´Ù.
Field tests were conducted to investigate characteristics of the transverse mixing and to evaluate the dispersion coefficients in the meandering natural streams. The Sum River and the Cheong-mi Creek, tributaries of Han River, were selected as the test site, and measurements of the hydraulic and dispersion data were performed. In the tracer tests, the radioisotope was used as a tracer and injected into a flow on the instantaneous point source. Using the measured data, the longitudinal and transverse dispersion coefficients were evaluated and compared with the previous studies. The longitudinal dispersion coefficients, which were evaluated by application of the analytical solution, were about 0.5 $m^2$/s at the Sum River and 0.2 $m^2$/s at the Cheong -mi Creek. The transverse dispersion coefficients, which were evaluated by the analytical solution and the moment method, were ranging from 0.01 to 0.06 $m^2$/s for the Sum River and from 0.01 to 0.05 $m^2$/s for the Cheong-mi Creek.
 
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ȾȥÇÕ;»çÇàÇÏõ;ÃßÀûÀÚ ½ÇÇè;ºÐ»ê°è¼ö;¸ð¸àÆ®¹ý;transverse mixing;meandering stream;tracer test;dispersion coefficient;moment method;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.36, no.4, 2003³â, pp.673-689
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921879168)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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