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Çѱ¹Áö¹Ý°øÇÐȸ / v.13, no.5, 1997³â, pp.155-168
dzȭÀÜÀûÅäÀÇ À¯µ¿Æ¯¼º¿¡ ´ëÇÑ ¿¬±¸
( Particle Transport of Residual Soils )
ÀÌÀθð;¹Ú±¤ÁØ; Á¤È¸¿ø, °í·Á´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇаú;Á¤È¸¿ø, µ¿ºÎ¿£Áö´Ï¾î¸µ ±â¼ú¿¬±¸¼Ò ¿¬±¸¿ø, Á¤È¸¿ø, °í·Á´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇаú;
 
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Èë ¼¼¸³ÀÚÀÇ ÀÌÅ» ¹× À¯µ¿Àº Áö¹Ý°øÇÐÀ̳ª Áö¹Ýȯ°æ°øÇÐÀûÀÎ °üÁ¡¿¡¼­ ¸Å¿ì Áß¿äÇÑ Çö»ó ÁßÀÇ ÇϳªÀÌ´Ù. ƯÈ÷ Áö¹Ýȯ°æ°øÇÐÀûÀÎ °ßÁö¿¡¼­ º¸¸é ¼¼¸²ÀÚ°¡ ÀÔÀÚÀ¯µ¿À» Çϱâ Àü¿¡ ¿À¿°¹°ÁúÀ» ÈíÂøÇϱ⠶§¹®¿¡, ¿À¿°¹°Áú Á¤È­ÀÇ ¹æÆíÀ¸·Î ÀÌ¿ëµÉ ¼ö ÀÖ´Ù. º» ³í¹®¿¡¼­´Â Çѱ¹¿¡ °¡Àå ÆíÀçÇØ ÀÖ´Â È­°­Ç³È­ÅäÀÇ ÀÔÀÚÀ¯µ¿Æ¯¼ºÀ» ½Ç³»½ÃÇè¿¡ ÀÇÇØ ÆÄ¾ÇÇÏ¿´´Ù. ½ÇÇè¿¡ »ç¿ëµÈ ½Ã·á´Â ´ëÇ¥ÀûÀÎ ÀÜ·ùÅä¶ó ÇÒ ¼ö ÀÖ´Â ¼­À» ½Å³»µ¿, Æ÷À̵¿ ¹× °æºÏ ¾Èµ¿ÀÇ ½Ã·á °¢°¢¿¡ ´ëÇÏ¿© È帧¿¡ ´ëÇÑ Áö¹ÝƯ¼º Ä¡µîÀ» ÃøÁ¤ÇÏ¿´´Ù. dzȭÀÜÀûÅä¿¡¼­ÀÇ ¼¼¸³ºÐ À¯µ¿Æ¯¼º¿¡ °¡Àå Å« ¿µÇâÀ» ¹ÌÂ÷´Â ÀÎÀÚ´Â ¼¼¸³ÀÚÀÇ ÇÔ·®°ú ÃʱⰣ±Ø·ü ±×¸®°í ÀÔµµºÐÆ÷·Î ³ªÅ¸³µ°í ÀÔÀÚ°¡ ÀÌÅ»µÇ±â ½ÃÀÛÇÏ´Â ÇѰè¼Óµµ´Â 200¹øÃ¼ Åë°ú·®¿¡ ºñ·Ê ÇÏ¿© °¨¼ÒÇÏ´Â °æÇâÀ» º¸¿´´Ù. ÀÌÅ»·üÀÇ º¯È­À²Àº °£±Ø·ü¿¡ ºñ·ÊÇÏ¿© Áõ°¡ÇÔÀ» º¸¿´À¸¸ç ÀÔµµºÐ Æ÷°¡ºÒ·®Çϰí200¹øÃ¼ Åë°ú·®ÀÌ ÀûÀº ½Ã·á¿¡¼­ÀÇ ÀÔÀÚÀÌÅ»·®ÀÌ °¡Àå Å©°Ô ³ªÅ¸³µ´Ù. ¶ÇÇÑ ½ÇÇè°á°ú¸¦ Åä´ë·Î ´Ü°èº° ÀÔÀÚÀ¯µ¿Çö»óÀ» Ç¥ÇöÇÏ´Â ±âº»¹æÁ¤½ÄÀ» ¸ðµ¨¸µÇϰí À¯ÇÑÂ÷ºÐ¹ýÀ» ÀÌ¿ëÇÏ¿© ÇØ¸¦±¸ÇϹǷνá È帧ÀÌ ¹ß»ýÇÏ´Â Áö¹Ý±¸Á¶¹°¿¡¼­ ÀÔÀÚÀ¯µ¿Çö»óÀÌ ¹ÌÄ¡´Â ¿µÇâÀ» ÆÄ¾ÇÇÒ ¼ö ÀÖ´Â Åä´ë¸¦ ¸¶·ÃÇÏ¿´´Ù.
The phenomena of detachment and movement of One particles are one of the important mechanisms both in geotechnical and geoenvironmental engineering. In geoenvironmental engineering, in particular, movement of fine particles may facilitate the transport of contaminants since the particle surfaces absorb contaminants before movement. Weathered granitic residual soils, which are the most abundant in Korea. contain large quantities of fine particles up to 50%. The characteristics of fine particle movement of weathered granitic residual soils are investigated in this paper. Samples are obtained from Poiiong, Shinnaedong in Seoul and Andong in Kyungpook : each of the samples represents typical residual soil types in Korea. Laboratory experiments for the three adopted soil types are performed. It is found that effluent concentration of the samples is influenced by porosity, fine particle percentage and particle size distribution. The critical velocity decreases as the fine particle percentage increases and the rate of change of erosion rate increases as the porosity increases. And well-graded samples showed less effluent concentrations compared to poorly-graded samples. The governing equation on the physical mechanism of fine particle movement and its nomerical solution scheme are suggested on the basis of the test results.
 
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Particle transport;Effluent concentration;Critical velocity;The rate of change of erosion rate;
 
Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.13, no.5, 1997³â, pp.155-168
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199711920447703)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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