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Çѱ¹Áö¹Ý°øÇÐȸ / v.22, no.7, 2006³â, pp.55-64
dzȭ°è¿­ »ç¸éÀÇ ºÒÆ÷È­ ÇÔ¼öƯ¼º°î¼± ÀÌ·ÂÀÌ °­¿ì ħÅõ¿¡ ¹ÌÄ¡´Â ¿µÇâ
( Effect of Hysteresis on Soil-Water Characteristic Curve in Weathered Granite and Gneiss Soil Slopes during Rainfall Infiltration )
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dzȭ »ç¸éÀº Áö¼ÓÀûÀÎ °­¿ì·Î ÀÎÇÏ¿© ¾èÀºÃþ¿¡¼­ ÆÄ±«°¡ ÀϾ°í ÀÖ´Ù. ÀÌ·¯ÇÑ ÆÄ±«µéÀº ÁÖ·Î °­¿ì ħÅõ·Î ÁöÇ¥¸é¿¡¼­ÀÇ ½ÀÀ±´ëÀÇ Çü¼º°ú ÀÌ·Î ÀÎÇÑ Èí¼ö·ÂÀÇ °¨¼Ò¿¡ ±âÀÎÇÑ´Ù. º» ¿¬±¸¿¡¼­´Â ´ëÇ¥ÀûÀΠdzȭ»ç¸éÀÎ È­°­ dzȭÅä ¹× Æí¸¶Ç³È­Åä¿¡ ´ëÇÑ ÇÔ¼öƯ¼º°î¼±ÀÇ °ÇÁ¶-½ÀÀ± À̷°ú ¼±Çà°­¿ì Á¶°ÇÀ» Ȱ¿ëÇÏ¿© ½Ã°£¿¡ µû¸¥ ºÒÆ÷È­ ħÅõ ÇØ¼®À» ÀΰøÀûÀÎ °­¿ì °­µµ¿Í Áö¼Ó½Ã°£À» ¼³Á¤ÇÏ¿© ½Ç½ÃÇÏ¿´´Ù. ±× °á°ú dzȭ »ç¸éÀÇ ºÒÆ÷È­ ħÅõ´Â ±íÀ̺°·Î ¼±Çà °­¿ì¿¡ ÀÇÇÑ Ãʱâ Èí¼ö·Â°ú À̷¿¡ µû¸¥ ºÒÆ÷È­ Åõ¼ö°è¼ö¿¡ ¸¹Àº ¿µÇâÀ» ¹Þ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ È­°­Ç³È­Åä°¡ Æí¸¶Ç³È­Åä º¸´Ù »ó´ëÀûÀ¸·Î ÀÛÀº °ø±â ÇÔÀÔ°ª, ÀÜ·ù Èí¼ö·Â, ±×¸®°í ½ÀÀ± Àü¸é Èí¼ö·ÂÀ» °¡Áö°í ÀÖÀ¸¸ç ÀÌ·Â loop°¡ À۾Ƽ­ ħÅõ¿¡ ´ëÇÑ Èí¼ö·ÂÀÇ º¯È­ ¹ÝÀÀÀÌ ¸Å¿ì ºü¸§À» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù.
Shallow failures of slopes in weathered soils are caused by infiltration caused by prolonged rainfall. These failures are mainly triggered by the deepening of the wetting band accompanied by a decrease in suction induced by the water infiltration. In this paper, hysteresis on soil-water characteristic curve (SWCC) of granite and gneiss weathered soils is investigated using transient flow analysis respectively. Each case was subjected to artificial rainfall intensities and time duration depending on the laboratory-based drying and wetting processes. The results show that the unsaturated seepage on weathered slopes are very much affected by the initial suction of soils and unsaturated permeability of the soils. In addition, a granite weathered soil has a lower air-entry value, residual matric suction, and wetting front suction and less hysteresis loop than a gneiss weathered soil.
 
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Hysteresis;Rainfall infiltration;Soil-water characteristic curve;Weathered soils;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.22, no.7, 2006³â, pp.55-64
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200634515068165)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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