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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.6, 2003³â, pp.151-160
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ºÒ¿¬¼Ó¸éÀÇ ºñ¼±Çü Àü´Ü°µµ¸¦ ÀÌ¿ëÇÑ ¾Ï¹Ý»ç¸é ½û±âÆÄ±« È®·ü ÇØ¼®
( Wedge Failure Probability Analysis for Rock Slope Based on Non-linear Shear Strength of Discontinuity ) |
| À±¿ìÇö;õº´½Ä; °æ¿ø´ëÇб³ »ê¾÷¤ýȯ°æ´ëÇпø;ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
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| ¾Ï¹Ý»ç¸éÀÇ ´ëÇ¥ÀûÀÎ ÆÄ±«À¯ÇüÀÎ ½û±âÆÄ±«¿¡ ´ëÇÑ È®·ü·ÐÀû ¾ÈÁ¤ ÇØ¼® ¼öÇà °úÁ¤¿¡¼ °¡Àå ÁÖ¿äÇÑ ºÒ¿¬¼Ó¸éÀÇ Æ¯¼ºÀÎ Àü´Ü °µµ¿¡ ´ëÇØ Mohr-Coulomb ¸ðµ¨¿¡ ÀÇÇÑ ¼±ÇüÀû °µµÆ¯¼º°ú Barton¸ðµ¨¿¡ ÀÇÇÑ ºñ¼±ÇüÀû °µµÆ¯¼ºÀÌ »ç¸éÀÇ ¾ÈÁ¤¼º ÇØ¼®¿¡ ÁÖ´Â ¿µÇâÀ» ºñ±³ÇϰíÀÚ ÇÏ¿´´Ù. »ç¸é ¾ÈÁ¤¼º ÇØ¼®ÀÇ ¹æ¹ýÀ¸·Î °áÁ¤·ÐÀû ÇØ¼®°ú Monte Carlo SimulationÀ» ÀÌ¿ëÇÑ È®·ü·ÐÀû ÇØ¼®À» ¼öÇàÇÏ¿´À¸¸ç, ºÒ¿¬¼Ó¸éÀÇ Åë°èÀû ºÐ¼®À» ¼öÇàÇÑ ÈÄ $x^2$ °ËÁõÀ» ÅëÇØ ºÐÆ÷ÇÔ¼ö¸¦ °ËÁõÇÏ¿´´Ù. ÇØ¼® ´ë»ó »ç¸éÀº Áß¾Ó¼± O O°ø±¸·Î, ºÒ¿¬¼Ó¸éÀÇ Æ¯¼ºÀ» ÆÄ¾ÇÇϱâ À§ÇØ BIPS, DOM, Scanline, Àý¸®¸é Á÷Á¢Àü´Ü ½ÃÇèÀڷḦ »ç¿ëÇÏ¿´´Ù. Mohr-Coulomb, Barton¸ðµ¨¿¡ ÀÇÇÑ °áÁ¤·ÐÀû ÇØ¼® °á°ú´Â ¸ðµÎ ¾ÈÁ¤ÇÑ °ÍÀ¸·Î ³ªÅ¸³µÀ¸³ª, È®·ü·ÐÀû ÇØ¼® °á°ú µÎ ¸ðµ¨ ¸ðµÎ 5% ÀÌ»óÀÇ ÆÄ±«È®·üÀ» ³ªÅ¸³¿À¸·Î¼ ÀáÀçÀûÀÎ ºÒ¾ÈÁ¤¼ºÀ» °¡Áö´Â °ÍÀ¸·Î Æò°¡µÇ¾ú´Ù. ¶ÇÇÑ Mohr-CoulombÀÇ ¸ðµ¨ÀÌ BartonÀÇ ¸ðµ¨º¸´Ù ´õ Å« ÆÄ±«È®·üÀ» °¡Áö´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ºÒ¿¬¼Ó¸éÀÇ Àü´Ü°µµ Á¤¼ö »êÁ¤½Ã Mohr-CoulombÀÇ ¸ðµ¨Àº ÇÑÁ¤µÈ ½Ç³»½ÃÇè ÀڷḦ °¡Áö°Ô µÇ°í, Á¤È®ÇÑ Á¡Âø·ÂÀÇ »êÁ¤ÀÌ ¾î·Á¿î Á¡, ÆÄ±«ºí·ÏÀÇ ±Ô¸ð°¡ ÀÛÀº °æ¿ì ¾ÈÀüÀ²ÀÌ Áö³ªÄ¡°Ô °ú´ë Æò°¡µÉ °¡´É¼º µîÀÌ ÀÖÀ¸¹Ç·Î, ÇÕ¸®ÀûÀÎ »ç¸é ¾ÈÁ¤¼º ÇØ¼®À» À§Çؼ´Â °µµÁ¤¼ö »êÁ¤½Ã ÀûÀýÇÑ ¸ðµ¨ ¼±ÅÃÀÌ Áß¿äÇÏ´Ù. |
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| The stability of the designed rock slope is analysed based on two kinds of shear strength model. Besides the deterministic analysis, a probabilistic approach on Monte Carlo simulation is proposed to deal with the uncertain characteristics of the discontinuity and the results obtained from two models are compared to each other. To carry out the research of characteristics of the discontinuity, BIPS, DOM Scanline survey data and direct shear test data are used, and chi-square test is used for determining the probability distribution function. The rock slope is evaluated to be stable in the deterministic analysis, but in the probabilistic analysis, the probability of failure is more than 5%, so, it is considered that the rock slope is unstable. In the shear strength models, the probability of the failure based on the Mohr-Coulomb model(linear model) is higher than that of the Barton model. It is supported by the fact that the Mohr-Coulomb model is more sensitive to block size than the Barton model. In fact, there is no reliable way to estimate the unit cohesion of the Mohr-Coulomb model except f3r back analysis and in the case of small block failure in the slope, Mohr-Coulomb model may excessively evaluate the factor of the safety. So, the Barton model of which parameters are easily acquired using the geological survey is more reasonable for the stability of the studied slope. Also, the selection of the proper shear strength model is an important factor for slope failure analysis. |
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| Ű¿öµå |
| Barton model;Discontinuity;Mohr-Coulomb model;Non-linear model;Probability of failure;Rock slope;Wedge failure; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.6, 2003³â, pp.151-160
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311922147937)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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