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Çѱ¹¼öÀÚ¿øÇÐȸ / v.37, no.5, 2004³â, pp.387-395
È¥ÇÕ»ç·Î ±¸¼ºµÈ ÇÏõ¿¡¼­ Çϻ󺯵¿ ¹× À¯»çÀÇ ÀÔµµºÐÆ÷ °è»êÀ» À§ÇÑ ¼öÄ¡¸ðÇü °³¹ß
( A Numerical Model for Bed Elevation Change and Bed Material Sorting in the Channel of Non-uniform Sediment )
Àåâ·¡;Á¤°ü¼ö;±èÀçÇÑ; Çѱ¹¼öÀÚ¿ø°ø»ç ¼öÀÚ¿ø¿¬±¸¿ø ¼öÀÚ¿ø½Ã½ºÅÛ ¿¬±¸¼Ò;Ãæ³²´ëÇб³ Åä¸ñ°øÇÐ;Ãæ³²´ëÇб³ Åä¸ñ°øÇаú;
 
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º» ³í¹®¿¡¼­´Â Çϻ󺯵¿ ¹× À¯»çÀÔÀÚÀÇ ½Ã°£Àû °ø°£Àû ºÐÆ÷¸¦ µ¿½Ã¿¡ ¸ðÀÇÇÒ ¼ö ÀÖ´Â 2Â÷¿ø ¼öÄ¡¸ðÇüÀ» Á¦½ÃÇÏ¿´´Ù. »çÇà¼ö·ÎÀÇ Çϻ󺯵¿Àº ¸¸°îºÎÀÇ ¿ÜÃø¿¡¼­´Â ÇÏ»óÀÌ ¼¼±¼µÇ°í ÈξÀ ´õ °ÅÄ£ ÀÔ°æÀÇ Àç·á·Î ±¸¼ºµÇ¸ç, ¸¸°îºÎÀÇ ³»Ãø¿¡¼­´Â ÇÏ»óÀÌ »ó½ÂÇϰí, ¼¼¸³Åä·Î ±¸¼ºµÇ¾ú´Ù. ¶ÇÇÑ »çÇàÇÏõ¿¡¼­ È帧ÀÇ ¹æÇâ¿¡ ´ëÇÑ ÀÔÀÚºÐÆ÷ °úÁ¤Àº »ó·ùÀÇ º¯°îÁ¡¿¡¼­ ½ÃÀÛÇÏ¿©, ÇÏ·ù º¯°îÁ¡¿¡¼­ ¸¶Ä¡°Ô µÇ´Â °ÍÀ» º¸¿©ÁÖ¾ú´Ù. ÇÏõÀÇ °æ°è°¡ ºÒ±ÔÄ¢ÇÏ°í º¹ÀâÇÑ ÇÏõ¿¡¼­´Â È¥ÇÕ»çÈ£ Çü¼ºµÈ ÇÏõ¿¡¼­º¸´Ù ±ÕÀÏ»ç·Î ÀÌ·ç¾îÁø ÇÏõ¿¡¼­ ÇÏ»óÀÌ ±í°Ô ¼¼±¼µÇ´Â Çö»óÀ» º¸¿©ÁØ´Ù. È¥ÇÕ»ç·Î ÀÌ·ç¾îÁø ÇÏõ¿¡¼­ÀÇ °ø°£Àû ÀÔµµ ºÐÆ÷´Â »çÇàÇÏõ¿¡¼­¿Í ¸¶Âù°¡Áö·Î ÇÏ»óÀÌ ÅðÀûµÇ´Â »çÇàÀÇ ³»Ãø¿¡¼­´Â ¼¼¸³Åä·Î ±¸¼ºµÇ°í ÇÏ»óÀÌ ¼¼±¼µÇ´Â ¿ÜÃø¿¡¼­´Â ±½Àº ÀÔÀÚ·Î ±¸¼ºµÇ´Â °ÍÀ» º¸¿©ÁÖ¾úÀ¸¸ç, ÇÏõ ÆøÀÌ Á¼Àº ºÎºÐ¿¡¼­´Â ÇÏ»óÀÇ ¼¼Ãâ ¹× ÇÏ»óÀç·á°¡ ±½°Ô º¯È­µÇ´Â °ÍÀ» º¸¿©ÁÖ¾ú´Ù.
A computer model was proposed to simulate channel changes and bed material sorting of the meandering channels with different grain size in time and space simultaneously. The bed at the outside of the meandering channel with mixed sediments was scoured deeply and composed of coarser materials, and at the inside was aggradated and composed of finer materials. The sorting process started at the upstream inflection point and was finished at the downstream inflection point. At the natural with complicated boundaries and non-uniform grain sizes, the bed near the outside at the bend and narrow width was scoured deeper with coarse materials than in the channel with uniform grain sizes. The point bars showed lip at the inside near the bend and the bed materials were finer The bed at the outside near the bend and in the narrow width was scoured deeply with the coarser materials.
 
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ÀÏ¹Ý ÁÂÇ¥°è;»çÇàÇÏõ;±ÕÀÏ»ç;È¥ÇÕ»ç;ÀÔµµºÐ±Þ(ºÐÆ÷);Generalized coordinate system;meandering channels;uniform grain size;non-uniform grain size;sediment sorting;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.37, no.5, 2004³â, pp.387-395
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922339481)
¾ð¾î : Çѱ¹¾î
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