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Çѱ¹Áö¹Ý°øÇÐȸ / v.21, no.6, 2005³â, pp.137-146
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( Adequacy Evaluation of Stability Analyses Considering Rainfall Infiltration on Railroad Cut-off Soil Slopes ) |
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| º» ¿¬±¸¿¡¼´Â Àü±¹ÀÇ 299°³ öµµ¿¬º¯ »ç¸é¿¡ ´ëÇÑ ÇöÀå Á¶»ç¸¦ ÅëÇØ »ç¸éÀÇ ÆÄ±« À¯Çü ¹× º¸° ½ÇŸ¦ ºÐ¼®Çϰí, Á¶»çµÈ »ç¸é Áß ÀýÃë Åä»ç»ç¸éÀ¸·Î ºÐ·ùµÈ 14°³ÀÇ »ç¸é¿¡ ´ëÇÏ¿© °¿ìÀÇ ¿µÇâÀ» °í·ÁÇÑ ¾ÈÁ¤¼º ÇØ¼®À» ¼öÇàÇÏ¿´´Ù. Ç¥ÃþÀ¯½Ç ÇüÅÂÀÇ ¾èÀº ÆÄ±«¸¦ °ËÅäÇϱâ À§ÇØ °¿ì¿¡ ÀÇÇØ ÁöÇ¥¿¡ ÀÓ½ÃÀûÀ¸·Î Çü¼ºµÇ´Â ÁöÇϼöÀ§¸¦ °¡Á¤ÇÑ ¹«ÇÑ»ç¸éÇØ¼®À» ¼öÇàÇÏ¿´À¸¸ç, À¯ÇÑ¿ä¼Ò¹ýÀ» Àû¿ëÇÑ Ä§ÅõÇØ¼® °á°ú¿Í ÁöÇϼöÀ§¸¦ ÁöÇ¥ ±Ùó·Î °¡Á¤ÇÏ´Â ¹æ¹ýÀ» ÅëÇØ °¿ì¸¦ °í·ÁÇÑ ÇѰèÆòÇüÇØ¼®À» ¼öÇàÇÏ¿´´Ù. ±âÁ¸ÀÇ ÆÄ±« ±â·Ï°ú ¾ÈÁ¤¼º ÇØ¼®À¸·Î ¿¹ÃøµÈ ÆÄ±« ÇüŸ¦ ºñ±³ÇÔÀ¸·Î½á Àû¿ëµÈ ÇØ¼®¹æ¹ýµéÀÇ ÀûÇÕ¼ºÀ» Æò°¡ÇÏ¿´´Ù. öµµ¿¬º¯ÀÇ ÀýÃë Åä»ç»ç¸é¿¡¼´Â ¾èÀº ±íÀÌÀÇ Ç¥ÃþÆÄ±«°¡ ÁÖ·Î ¹ß»ýÇÏ¿´À¸³ª, ÇѰèÆòÇüÇØ¼®¹ýÀ¸·Î´Â À̸¦ ÀûÀýÈ÷ ¿¹ÃøÇÒ ¼ö ¾ø¾ú´Ù. °¿ì¿¡ ÀÇÇÑ Ç¥ÃþÆÄ±«¸¦ º¸´Ù ÇÕ¸®ÀûÀ¸·Î ¿¹ÃøÇϱâ À§Çؼ´Â °¿ì¿¡ ÀÇÇÑ ¾ÈÁ¤¼º ÀúÇÏ È¿°ú·Î¼ ¸ð°üÈíÀÔ·ÂÀÇ °¨¼Ò·Î ÀÎÇÑ °£±Ø¼ö¾ÐÀÇ Áõ°¡»Ó¸¸ ¾Æ´Ï¶ó, Áö¹ÝÀÇ Ä§Åõ´Éº¸´Ù Å« °¿ì·Î ÀÎÇØ ¹ß»ýÇϴ ǥ¸é À¯Ãâ¼ö¿¡ ÀÇÇÑ Ä§½ÄÀ» °í·ÁÇÒ ¼ö ÀÖ´Â »õ·Î¿î ÇØ¼®±â¹ýÀÇ °³¹ßÀÌ ¿ä±¸µÈ´Ù. |
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| 299 railroad slopes were investigated and the failure characteristics and reinforcement patterns were analyzed. Stability analyses on the 14 cut-off soil slopes were carried out. Surficial failures were predicted by infinite slope analyses assuming the temporarily perched ground water table at soil surface during rainfall period. Limit equilibrium analyses were also carried out and the influences of rainfall infiltration on the slope stabilities were taken Into account by seepage analyses using finite element method and by assuming ground water tables to be located adjacent to soil surface. The adequacy of those analyses was evaluated by comparing the slope failure characteristics between analysis results and the past failure records. From the comparison results, it was deduced that the limit equilibrium analyses were not appropriate to estimate the shallow failure that occurred at most of the railroad cut-off soil slopes. For the better estimation of the surficial failure, not only the increase of pore-water pressure (reduction of matric suction), but also the influence of water flows over slope surface which erode soil mass, should be evaluated and considered. |
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| Ű¿öµå |
| Cut-off soil slope;Failure characteristics;Matric suction;Rainfall infilration;Surficial failure; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.21, no.6, 2005³â, pp.137-146
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200504840676499)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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