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Çѱ¹Áö¹Ý°øÇÐȸ / v.25, no.10, 2009³â, pp.55-65
ºÒÆ÷È­ dzȭ°è¿­ »ç¸éÀÇ ¾ÈÁ¤¼º¿¡ ¹ÌÄ¡´Â »óÀçÀÀ·ÂÀÇ ¿µÇâ
( Effects of Overburden Stress on Stability in Unsaturated Weathered Soil Slopes )
¹Ú¼º¿Ï;¹ÚÀ翵; ´Ü±¹´ëÇб³ Åä¸ñȯ°æ°øÇаú;´Ü±¹´ëÇб³ Åä¸ñȯ°æ°øÇаú;
 
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°­¿ìħÅõ¿¡ ÀÇÇÑ »ç¸éÀÇ Ç¥ÃþÆÄ±«´Â ±¹³»¿¡¼­µµ Àß ¾Ë·ÁÁ® ÀÖ°í ÀÌ·¯ÇÑ ºÒÆ÷È­ »ç¸é¿¡¼­ÀÇ ¼ö¸®ÇÐÀû/¿ªÇÐÀû °Åµ¿Àº ¸Å¿ì º¹ÀâÇÏ´Ù. ºÒÆ÷È­»ç¸é¿¡ ´ëÇÑ ÇØ¼® ¼öÇà ½Ã, ÇÔ¼öƯ¼º°î¼±Àº ¸Å¿ì Áß¿äÇÑ Áö¹ÝÁ¤¼ö·Î Ȱ¿ëµÇ°í Àִµ¥ dzȭ»ç¸éÀÇ °æ¿ì ÃþÀ¸·Î ±¸¼ºµÇ¾î ÀÖ°í »óÀçÇÏÁßÀ» ¹Þ°í ÀÖ¾î ÇÔ¼öƯ¼º°î¼±ÀÇ Àû¿ë½Ã ÀûÀýÇÑ »óÀçÇÏÁßÀÇ È¿°ú¿¡ ´ëÇÑ °í·Á°¡ ÇÊ¿äÇÏ´Ù. ÀÌ·¯ÇÑ »óȲÀ» ¹Ý¿µÇϱâ À§ÇÏ¿© º» ¿¬±¸¿¡¼­´Â dzȭÅ並 ´ë»óÀ¸·Î ´Ù¾çÇÑ Á¶°ÇÀÇ »óÀçÇÏÁßÇÏ¿¡¼­ ÇÔ¼öƯ¼º°î¼±À» ȹµæÇÏ¿´À¸¸ç À̸¦ ÅëÇÏ¿© ºÒÆ÷È­Àü´Ü°­µµ¸¦ ÃßÁ¤ÇÏ¿´´Ù. ¶ÇÇÑ »óÀçÇÏÁßÀÇ ¿µÇâÀ» °í·ÁÇÏ¿© ºÒÆ÷ȭdzȭ»ç¸é¿¡ ´ëÇÑ ¾ÈÁ¤¼ºÀ» Æò°¡ÇÏ¿´´Ù. ÇØ¼® °á°ú »óÀçÇÏÁß¿¡ ´ëÇÑ È¿°ú´Â ¸Å¿ì Áß¿äÇϸç ÀûÀýÇÑ ÇØ¼®¿¡¼­ÀÇ Àû¿ëÀº »ç¸é¾ÈÁ¤¼º ¿¹ÃøÀº Ç×»ó ½Ãų ¼ö ÀÖ´Ù°í ÆÇ´ÜµÈ´Ù.
It has been well known that the infiltration of rainfall causes major surfacial slope failures in Korea. However, the hydrological and mechanical behaviors in unsaturated slopes are somewhat complex. When an analysis on unsaturated slope problems is performed, soil-water characteristics curves (SWCC) are considered as major parameters to apply. Since the weathered soil slopes are layered and stressed by overburden pressures, the response of SWCCs should account for its overburden pressure. To deal with this situation, in this study, laboratory testings were conducted to evaluate the SWCC under various overburden stress. In addition, the unsaturated shear strength was estimated using SWCC. Then the performance of unsaturated weathered soil slopes was evaluated under various conditions after applying the effect of overburden pressure on SWCCs. The results demonstrated that the effect of overburden pressure on SWCC could be substantial and the proper application to analysis is very important to enhance the prediction of slope stability.
 
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Overburden pressure;Slope stability;Soil-water characteristic curve;Unsaturated soil;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.25, no.10, 2009³â, pp.55-65
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200919061727171)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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