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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.2, 2003³â, pp.199-206
Fragmentation ÇÁ·¢Å»À» ÀÌ¿ëÇÑ ÀÔµµºÐÆ÷ ºÐ¼®
( Fragmentation Fractal Analysis on Particle-size Distribution )
¹Î´ö±â;ÀÌ¿ÏÁø; ¿ï»ê´ëÇб³ °ø°ú´ëÇÐ °Ç¼³È¯°æ°øÇкÎ;¿ï»ê´ëÇб³ °Ç¼³È¯°æ°øÇкÎ;
 
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ÈëÀ» ³ªÅ¸³»´Â °¡Àå ±âº»ÀûÀÎ ¹°¸®Àû ¼ºÁúÁßÀÇ Çϳª°¡ ÈëÀ» ±¸¼ºÇÏ´Â ÀÔÀÚµéÀÇ ÀÔµµºÐÆ÷À̸ç, ÀÔµµºÐÆ÷Ư¼ºÀ» ºÐ¼®Çϱâ À§ÇØ ÃÖ±Ù¿¡ ´ëµÎµÇ°í ÀÖ´Â ¹æ¹ýÁßÀÇ Çϳª°¡ ÇÁ·¢Å» ÀÌ·ÐÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â fragmentation ÇÁ·¢Å»À» ÀÌ¿ëÇÏ¿© ÈëÀÇ ÀÔµµºÐÆ÷°î¼±ÀÇ Æ¯¼ºÀ» ÆÄ¾ÇÇÏ¿´´Ù. Fragmentation ÇÁ·¢Å»À» Ç¥ÇöÇÏ´Â ¹æ¹ý¿¡´Â ¡®°³¼ö-À԰桯ÇÁ·¢Å»°ú 'Áß·®-ÀÔ°æ' ÇÁ·¢Å»ÀÌ ÀÖÀ¸¸ç, º» ¿¬±¸ °á°ú, 'Áß·®-ÀÔ°æ' ¹æ¹ýÀÌ ´õ ½Ç¿ëÀûÀ̾ú´Ù. ±Õµî°è¼ö($C_{u}$)°¡ 4ÀÌÇÏ¿¡¼­´Â ±Õµî°è¼ö°¡ Áõ°¡ÇÔ¿¡ µû¶ó ÇÁ·¢Å»Â÷¿ø($D_{tot}$)ÀÌ ±Þ°ÝÈ÷ Áõ°¡ÇÏ¿´À¸³ª, ±Õµî°è¼ö°¡ 6À̻󿡼­´Â ÀÏÁ¤ÇÑ °ª¿¡ ¼ö·ÅµÇ´Â °á°ú¸¦ ³ªÅ¸³Â´Ù. °î·ü°è¼ö($C_{c}$)°¡ 3À̻󿡼­´Â ÇÁ·¢Å»Â÷¿øÀº Å©±â°¡ ÀÛÀº ÀÔÀÚµéÀÇ ¿µÇâÀ» ¹Þ°í, °î·ü°è¼ö°¡ 3ÀÌÇÏ¿¡¼­´Â Å« ÀÔÀÚµéÀÇ ¿µÇâÀ» ¹Þ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. À¯È¿ÀÔ°æ($D_{10}$)ÀÇ Å©±â¿¡ µû¸¥ ÇÁ·¢Å»Â÷¿øÀÇ º¯È­¸¦ ºÐ¼®ÇÑ °á°ú, ±Õµî°è¼ö¿Í °î·ü°è¼ö°¡ °°À» °æ¿ì ÇÁ·¢Å»Â÷¿øÀº À¯È¿ÀÔ°æÀÇ Å©±â¿¡ ¿µÇâÀ» °ÅÀÇ ¹ÞÁö ¾Ê´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. Àüü ÀÔÀÚÀÇ Å©±âºÐÆ÷¸¦ °í·ÁÇÒ ¼ö ÀÖ´Â ÇÁ·¢Å» °³³äÀ» ÀÔµµºÐ¼®¿¡ Àû¿ëÇÏ´Â °ÍÀÌ ¹Ù¶÷Á÷ÇÒ °ÍÀ¸·Î ÆÇ´ÜµÇ¸ç, ÇâÈÄ ÇÁ·¢Å»Â÷¿ø°ú ÈëÀÇ °øÇÐÀû Ư¼º°úÀÇ °ü°èÁ¤¸³¿¡ ´ëÇÑ Áö¼ÓÀûÀÎ ¿¬±¸°¡ ÇÊ¿äÇÏ´Ù.
Particle-size distribution in soils is one of the most fundamental physical properties of soils. One of the latest developments in the study of particle-size distributions has focused on the use of fractal theories. In this study, the fragmentation fractals were used for determining the characteristics of the particle-size distribution curve. It was shown that the mass-size distribution method was more practical than the cumulative number-size distribution method. From the co-relation between fractal dimensions($D_{tot}$) and the coefficient of uniformity($C_{u}$), there was a sharp increase in fractal dimensions for $C_{u}$<4, but fractal dimension converged the single value for $D_{u}$$geq$6. Fractal dimensions were affected by small sized particles for $C_{c}$$geq$3 and large sized particles for $C_{c}$/<3. As a result of the analysis of the influence of the effective size($D_{10}$), it was observed that the changes of $D_{tot}$/ were nominal beyond the effective size.
 
Ű¿öµå
Cumulative number-size distribution;Fragmentation fractal;Mass-size distribution;Particle-size distribution;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.2, 2003³â, pp.199-206
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921640837)
¾ð¾î : Çѱ¹¾î
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