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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.3, 2002³â, pp.5-12
ÀÔµµºÐÆ÷¸¦ ÀÌ¿ëÇÑ Åõ¼ö°è¼öÀÇ ¿¹Ãø
( Prediction of Hydraulic Conductivity from Gran-size Distribution Parameters )
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Åõ¼ö°è¼ö´Â Áö¹Ý°øÇÐÀÇ ¹®Á¦¸¦ ÇØ°áÇÏ´Â µ¥ Áß¿äÇÑ ÀÎÀÚÀÇ ÇϳªÀÌ´Ù. ±×·¸Áö¸¸ ÇöÀåÀ̳ª ½ÇÇè½Ç¿¡¼­ Åõ¼ö°è¼ö¸¦ ±¸ÇÏ·Á¸é ½Ã°£°ú ºñ¿ëÀÌ ¸¹ÀÌ µç´Ù. ÀÌ ³í¹®¿¡¼­´Â ÀÔµµºÐÆ÷¸¦ ¹Ý¿µÇÏ´Â Åë°èÀûÀÎ °è¼ö¸¦ ÀÌ¿ëÇÏ¿© ¸ð·¡ÀÇ Åõ¼ö°è¼ö¸¦ ¿¹ÃøÇÒ ¼ö ÀÖ´Â ½ÄÀ» Á¦¾ÈÇÏ¿´´Ù. À̸¦ À§ÇØ 36°¡Áö ÀÔµµºÐÆ÷ÀÇ ½Ã·á¸¦ Åë°èÀûÀÎ ¹æ¹ýÀ¸·Î Á¶¼ºÇÏ¿© Åõ¼ö½ÃÇèÀ» ÇÑ ÈÄ ±× °á°ú¸¦ ȸ±ÍºÐ¼®ÇÏ¿´´Ù. Á¦¾È½ÄÀº º¯¼ö·Î¼­ üºÐ¼®½ÃÇè¿¡¼­ ±¸ÇÑ ¸ð·¡ ÀÔ°æÀÇ ±âÇÏÆò±Õ°ú ±âÇÏÇ¥ÁØÆíÂ÷ ¶Ç´Â D_{10},D_{50},D_{60} µî°ú °°Àº ÀÔµµºÐÆ÷°è¼ö¸¦ »ç¿ëÇÑ´Ù. Á¦¾ÈµÈ ½ÄÀÇ ¼º´ÉÀ» °ËÁõÇϱâ À§ÇØ ±¹³» 20°³ Áö¿ª¿¡¼­ äÃëÇÑ ½Ã·á¿¡ ´ëÇÑ Åõ¼ö°è¼öÀÇ ¿¹ÃøÄ¡¿Í ½ÇÃøÄ¡¸¦ ºñ±³ÇÑ °á°ú ºñ±³Àû Àß ¸Â´Â °ÍÀ¸·Î ÆÇ¸íµÇ¿´´Ù. ¶ÇÇÑ Á¦¾È½ÄÀÇ ¼º´ÉÀÌ Hazen µî ´Ù¸¥ ¿¬±¸ÀÚµéÀÇ ½Ä°ú ºñ±³µÇ¾ú´Ù.
Hydraulic conductivity k is one of the most important engineering properties of soil. However, both field and laboratory procedures fur the determination of k are often tedious and expensive. This paper presents new models to predict k using statistical parameters from grain size distribution. A number of permeability tests far 36 types of sands mixed based on statistics were conducted to develop the regression-based models. Parameters used to estimate k are both the geometric mean and geometric standard deviation of the soil samples, or the particle-size distribution curve parameters such as D_{10},D_{50},D_{60}. Hydraulic conductivity predicted by this model is in good agreement with the laboratory measurements fir the soil samples obtained at 20 locations within the Korean Peninsula. The performances of the proposed models were also compared with those of existing models including Hazen's.
 
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Geometric mean;Geometric standard deviation;Grain-size distribution;Hydraulic conductivity;Regression;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.3, 2002³â, pp.5-12
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921035293)
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