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Çѱ¹Áö¹Ý°øÇÐȸ / v.26, no.10, 2010³â, pp.49-60
ÇÔ¼öƯ¼º¿¡ ±Ù°ÅÇÑ ±¹³» dzȭÅäÀÇ ºÒÆ÷È­ Åõ¼ö°î¼± ÃßÁ¤
( Estimation of Unsaturated Permeability Function from Water Retention Characteristics for Korean Weathered Soils )
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Áö¹ÝÀÇ Åõ¼öƯ¼ºÀº ´Ù¾çÇÑ Áö¹Ý±¸Á¶¹°ÀÇ ¼³°è ¹× ÇØ¼®¿¡¼­ Áß¿äÇÑ Áö¹Ý¹°¼ºÀÌ´Ù. ƯÈ÷ ºÒÆ÷È­ »óÅ¿¡¼­ ¸ð°üÈí¼ö·ÂÀÇ ¿µÇâÀ» ¹ÞÀ¸¸ç ¸ðÆÇÈí¼ö·Â Áõ°¡¿¡ µû¶ó °¨¼ÒÇÏ´Â °æÇâÀº ÇÔ¼öƯ¼º º¯È­¿Í À¯»çÇÏ´Ù. ºÒÆ÷È­ Åõ¼ö°è¼ö´Â ½Ç³»½ÇÇèÀ» ÅëÇØ Á÷Á¢ÀûÀ¸·Î ±¸Çϰųª ÇÔ¼öƯ¼º°î¼±À¸·ÎºÎÅÍ À¯ÃßµÈ À̷нÄÀ» ÅëÇØ °£Á¢ÀûÀ¸·Î ¾òÀ» ¼ö ÀÖ´Ù. º» ³í¹®¿¡¼­´Â ±¹³» 7°³ Áö¿ª¿¡ ´ëÇÑ ½Ã·á¸¦ ´ë»óÀ¸·Î ÇÔ¼öƯ¼º½ÇÇè°ú º» ¿¬±¸¿¡¼­ °³¹ßÇÑ ºÒÆ÷È­ Åõ¼ö½ÇÇè Àåºñ¸¦ ÀÌ¿ëÇÏ¿© ºÒÆ÷È­ Åõ¼ö½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù. Áö¹ÝÀÇ ÇÔ¼ö»óŸ¦ ³ªÅ¸³»´Â ÇÔ¼öƯ¼º°î¼±ÀÌ ºÒÆ÷È­ Åõ¼ö°è¼ö¿Í ¹ÐÁ¢ÇÑ °ü·ÃÀÌ ÀÖÀ¸¹Ç·Î ÇÔ¼öƯ¼º°î¼±À¸·ÎºÎÅÍ ºÒÆ÷È­ Åõ¼ö°î¼±À» À¯ÃßÇÏ´Â ¿©·¯ ¸ðÅÚ °á°ú¿Í ½ÇÇè°á°ú¸¦ ºñ±³ÇÏ¿´´Ù. ±×·¯³ª ±âÁ¸ÀÇ ÃßÁ¤¹æ¹ýÀº ±¹³»Áö¹ÝÀÇ Åõ¼öƯ¼ºÀ» Àß Ç¥ÇöÇÏÁö ¸øÇϰí ÀÖ´Ù. µû¶ó¼­ ±¹³» dzȭÅäÀÇ ºÒÆ÷È­ Åõ¼ö°î¼±À» Á¤È®È÷ À¯ÃßÇϱâ À§ÇÏ¿© º¸Á¤°è¼ö¸¦ Àû¿ëÇÏ¿© FXK-M Åõ¼ö¸ðµ¨À» Á¦½ÃÇÏ¿´°í º¸Á¤°è¼ö¸¦ ÇÔ¼öƯ¼º°î¼±ÀÇ °ø±âÇÔÀÔÄ¡·ÎºÎÅÍ »êÁ¤ÇÒ ¼ö ÀÖ´Â ¼ö½ÄÀ» Á¦¾ÈÇÏ¿´´Ù.
Unsaturated permeability function is an important factor in the design and analysis of various unsaturated soil structures. Generally the permeability characteristics decrease as the mat ric suction increases and the trend is similar to water retention characteristics of a soil. The permeability of unsaturated soils can be obtained directly by laboratory tests or indirectly by estimation methods from other soil properties. For unsaturated soils sampled from 7 areas in KOREA, SWCCs and unsaturated permeability functions were obtained by experimental tests. The unsaturated permeability results were also compared with the unsaturated permeability functions derived from the SWCCs theoretically. However, the current estimation models of unsaturated permeability function did not express the unsaturated permeability characteristics. Therefore, the FXK-M permeability function was modified to predict more accurate permeability functions for Korean weathered soils using a correction factor that can be calculated from the air-entry value of SWCC. The new estimation model resulted in good agreements for all tested soils.
 
Ű¿öµå
Estimation of soil properties;Soil-Water characteristic curve;Unsaturated permeability function;Unsaturated soil;Weathered soil;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.26, no.10, 2010³â, pp.49-60
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201011949347211)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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