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Çѱ¹¼öÀÚ¿øÇÐȸ / v.30, no.6, 1997³â, pp.699-699
Ãß°èÇÐÀû ¹æ¹ýÀ» ÀÌ¿ëÇÑ ¼ºÃþÈ­µÈ Èë¿¡¼­ À¯È¿ ºñÆ÷È­Åõ¼ö°è¼öÀÇ À¯µµ
( Derivation of the Effective Hydraulic Conductivity in Stratified Layered Soil Using Stochastic Approach )
À±¼º¿ë;¼±¿ìÁßÈ£; ¾È»ê°ø¾÷Àü¹®´ëÇÐ Åä¸ñ°øÇаú ÀüÀÓ°­»ç, °æ¿ø´ëÇб³ Åä¸ñ°øÇаú ÀüÀÓ°­»ç, ¼­¿ï´ëÇб³ ÃÑÀå;¼­¿ï´ëÇб³ ÃÑÀå;
 
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3Â÷¿ø Ãß°èÇÐÀû ¹æ¹ýÀ» »ç¿ëÇÏ¿© ¼ºÃþÈ­µÈ Èë¿¡¼­ À¯È¿ ºñÆ÷È­Åõ¼ö°è¼ö¸¦ À¯µµÇÏ¿´´Ù. ¼ºÃþÈ­µÈ ÈëÀÇ »ó°ü±æÀÌ´Â Â÷À̰¡ Àֱ⠶§¹®¿¡ Ãß°èÇнÄÀÌ ´Ü¼øÈ­µÇ¸é¼­ À¯È¿ ºñÆ÷È­Åõ¼ö°è¼ö¿¡ ´ëÇÑ ÀϹݽÄÀ» ÇØ¼®ÀûÀ¸·Î À¯µµÇÒ ¼ö ÀÖ°Ô µÈ´Ù. ¶ÇÇÑ Æò±ÕÈ帧ÀÌ Æ¯Á¤ÇÑ ¹üÀ§(½ÀÀ±Àü¼±, Á¥À½°úÁ¤, ¸¶¸§°úÁ¤)¿¡¼­ À¯È¿ÇÑ ´Ü¼øÈ­µÈ Á¡±Ù½ÄÀ» À¯µµÇÏ¿´´Ù. ¿¹ÁõÀ¸·Î ÀÌ·ÐÀûÀÎ °á°ú¸¦ °¡»ó Á¡Åä¿¡ Àû¿ëÇÏ¿´´Ù. ±× °á°ú À¯È¿ ºñÆ÷È­Åõ¼ö°è¼ö´Â °Å½ÃÀûÀÎ ÀÌ·ÂÇö»óÀ» ³ªÅ¸³¿À» ¾Ë ¼ö ÀÖ¾ú´Ù. °Å½ÃÀûÀÎ ÀÌ·ÂÇö»óÀ̶õ ¹Ì½ÃÀûÀÎ ¹Ì·ÂÇö»óÀ̶ó±â º¸´Ù´Â ¿ÀÈ÷·Á ÈëÀÇ °ø°£ÀûÀÎ º¯µ¿À¸·Î ÀÎÇÏ¿© ¹ß»ýÇÏ´Â °ÍÀÌ´Ù. ¶ÇÇÑ À¯È¿ ºñÆ÷¿ÍÅõ¼ö°è¼ö´Â ÈëÀÇ ºñ±ÕÁú¼ºÀ» ¹«½ÃÇÑ °æ¿ìº¸´Ù ºñ±ÕÁú¼ºÀ» °í·ÁÇÑ °æ¿ì¿¡¼­ Å©°Ô ³ªÅ¸³µ´Ù.
The effective unsaturated hydraulic conductivity in stratified soils is evaluated using a three-dimensional stochastic approach. Because of the disparity of the correlation scales in a stratified soil, the general stochastic equations are simplified. This allows analytical evaluation of generic expressions for the effective hydraulic conductivities. Simple asymptotic expressions, valid at particular ranges(wetting front, drying condition, wetting condition) of the mean flow characteristics, are also derived. An example of applying the derived theoretical result to a imaginaryl clay soil is presented. It reveals found that the effective unsaturated hydraulic conductivity showed large-scale hysteresis. Such large-scale hysteresis was produced by the spatial variability of hydraulic soil properties rather than hysteresis of the local parameters. In addition the results show that the effective hydraulic conductivities were larger in the case of accommodating heterogeneity of soil preperties rather than neglecting heterogeneity of soil properties.
 
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Ãß°èÇÐÀû ¹æ¹ý;ºñÆ÷È­Åõ¼ö°è¼ö;ÀÌ·ÂÇö»ó;ºñ±ÕÁú¼º;stochastic approach;unsaturated hydraulic conductivity;hysteresis;heterogeneity;
 
Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.30, no.6, 1997³â, pp.699-699
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199710102421232)
¾ð¾î : Çѱ¹¾î
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