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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.9, 2004³â, pp.47-56
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dzÈÀÜ·ùÅäÀÇ »ý¼º¸ðµ¨ÀÇ Á¦¾È
( A Proposal of a Model for the Generation of Weathered Residual Soils ) |
| ¹Î´ö±â;ÀÌ¿ÏÁø; ¿ï»ê´ëÇб³ °ø°ú´ëÇÐ °Ç¼³È¯°æ°øÇкÎ;¿ï»ê´ëÇб³ °ø°ú´ëÇÐ °Ç¼³È¯°æ°øÇкÎ;
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| º» ¿¬±¸¿¡¼´Â dzÈÀÜ·ùÅäÀÇ »ý¼ºÀ» Ư¼ºÈ½ÃŰ´Â »õ·Î¿î ºÐ¿¸ðµ¨À» Á¦¾ÈÇÏ¿´À¸¸ç, GRS¸ðµ¨À̶ó°í ¸í¸íÇÏ¿´´Ù. GRS ¸ðµ¨Àº dzȰ¡ ¸¹ÀÌ ÁøÇàµÉ¼ö·Ï Èë ÀÔÀÚÀÇ Å©±â°¡ ÀÛ¾ÆÁö°í Èë ¼ÓÀÇ °£±ØÀÌ ¸¹¾ÆÁø´Ù´Â »ç½Ç¿¡ Âø¾ÈÇÏ¿´À¸¸ç, ÇÁ·¢Å» ÀÌ·ÐÀ¸·ÎºÎÅÍ µµÃâµÈ $P_F$(ºÐ¿°¡´É¼º)·Î½á dzÈÀÜ·ùÅäÀÇ »ý¼º°úÁ¤À» Ç¥ÇöÇÒ ¼ö ÀÖ´Ù. ¾Ï¼®ÀÌ ºÐ¿µÊÀ¸·Î½á Èë ÀÔÀÚµéÀÌ »ý¼ºµÇ¸ç ¾Ï¼®ÀÇ ºÐ¿Àº ´Ü°èº°·Î ÁøÇàµÇÁö¸¸ °¢ ´Ü°èº° ºÐ¿°¡´É¼ºÀº ÀÏÁ¤ÇÏÁö ¾Ê´Ù´Â °ÍÀÌ GRS¸ðµ¨ÀÇ ±âº»°³³äÀÌ´Ù. GRS¸ðµ¨ÀÇ Àû¿ë¼ºÀ» °ËÁõÇÑ °á°ú, ÀÔÀÚµéÀÇ ÀÜ·ù·®ÀÌ ¸¹Àº ÀÔ°æ¿¡¼ $P_{Fi}$(ºÐ¿´Ü°èº° ºÐ¿°¡´É¼º)°¡ ÀÛ°Ô »êÃâµÇ¾ú°í, ÀÔµµºÐÆ÷°¡ ¾çÈ£ÇÒ¼ö·Ï Å©°Ô »êÃâµÇ¾ú´Ù. ÀϹÝÀûÀÎ Èë¿¡¼ ³ªÅ¸³ª´Â SÀÚÇü»óÀÇ ÀÔµµºÐÆ÷°î¼±Àº $P_{Fi}$°¡ ³ôÀº ¿À¸ñÇü»ó¿¡¼ ³ªÅ¸³µÀ¸¸ç, $P_{Fi}$ÀÇ º¯ÈÇü»óÀÌ º¼·ÏÇÏ¸é¼ ³ôÀº °ªÀ» °¡Áú°æ¿ì¿¡´Â ºóÀÔµµÀÇ ÀÔµµºÐÆ÷Ư¼ºÀ» ³ªÅ¸³»¾ú´Ù. Àü¹ÝÀûÀ¸·Î $P_{Fi}$°¡ ÀÛÀº °æ¿ì¿¡´Â $P_{Fi}$ÀÇ º¯ÈÇü»ó¿¡ °ü°è¾øÀÌ Å« ÀÔÀÚÀÇ ÀÜ·ù·®ÀÌ ¸¹Àº ¿À¸ñÇÑ Çü»óÀÇ ÀÔµµºÐÆ÷°î¼±À» ³ªÅ¸³»¾ú´Ù. $P_{Fi}$ÀÇ Æò±Õ°ªÀº ±Õµî°è¼ö$(C_u)$¿Í ºÐ¿ÇÁ·¢Å»Â÷¿ø$(D_r)$¿¡ ºñ·ÊÇÏ¿© Áõ°¡ÇÏ¿´À¸³ª, °î·ü°è¼ö$(C_C)$¿Í´Â ¹«°üÇÏ¿´´Ù. |
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| A new fragmentation model, called the GRS (the generation model of weathered residual soils) model, was proposed in this study, This model could identify the formation of a residual soil. This model is based on the phenomena that as the soil was weathered more highly, soil particles were smaller and pores were more expanded simultaneously. The possibility of fragmentation, $P_F,$ which was based on the fractal theory, was introduced in this model. There were some fundamental notions in the GRS model that soil particles were generated as the rock is fragmented, and the fragmentation of the rock was performed step by step. The $P_F,$ of the rock was not constant at each fragmentation steps. As a result of application on the GRS model, there were more residue where $P_{Fi}s$ were small at any particle size. There was a S-shape of PSD curve at the concave shape of $P_{Fi},$ and the PSD curve goes to a gaped graded curve at the convex shape of $P_{Fi}.$ The shape of PSD curve was concave in the case of small $P_{Fi}s.$ The value of $P_{Fi}$ increased with the coefficient of uniformity $(C_u)$ and the fragmentation fractal dimension $(D_r),$ but had no relation with the coefficient of gradation $(C_C).$ |
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| Ű¿öµå |
| Fractal theory;GRS model;Particle size distribution;Possibility of fragmentation; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.9, 2004³â, pp.47-56
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200430710458960)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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