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Çѱ¹Áö¹Ý°øÇÐȸ / v.10, no.1, 1994³â, pp.47-62
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¼öÄ¡ÇØ¼®À» ÀÌ¿ëÇÑ »ê»ç¸é¿¡¼ÀÇ °£±Ø¼ö¾Ð ¿¹Ãø¿¡ °üÇÑ ¿¬±¸
( A Numerical Analysis of Porewater Pressure Predictions on Hillside Slopes ) |
| ÀÌÀθð;¼Á¤º¹; Á¤È¸¿ø, °í·Á´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇаú;°í·Á´ëÇб³ ´ëÇпø Åä¸ñȯ°æ°øÇаú;
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| »ê»ç¸é¿¡¼ °¿ì¿¡ ÀÇÇÑ ÁöÇϼöÀ§ »ó½ÂÀº »ç¸éÀÇ ¾ÈÁ¤¼º¿¡ Å« ¿µÇâÀ» ¹ÌÄ¡´Â Áß¿äÇÑ ¿ä¼ÒÀÓÀº ÀÌ¹Ì Àß ¾Ë·ÁÁ® ÀÖ´Ù. ±×·¯¹Ç·Î °¿ì·Î ÀÎÇÑ ÁöÇϼöÀ§ »ó½ÂÀ» ¿¹ÃøÇÏ´Â ÀÏÀº »ê»ç¸éÀÇ ¾ÈÁ¤¼ºÀ» ÇØ¼®Çϱâ À§ÇÑ ¸Å¿ì Áß¿äÇÑ ¿ä¼ÒÀÌ´Ù. º» ¿¬±¸´Â Æ÷ÈÈ帧°ú ºñÆ÷ÈÈ帧À» °í·ÁÇÑ »ê»ç¸é¿¡¼ÀÇ ÁöÇϼöÀ§ º¯µ¿À» ¿¹ÃøÇϱâ À§ÇÑ ¼öÄ¡ÇØ¼® ¸ðµ¨ÀÇ °³¹ß°ú Àû¿ë °¡´É¼ºÀ» °ËÅäÇÏ¿´À¸¸ç, ¼öÄ¡ÇØ¼®ÀÌ °®´Â Å« ¾àÁ¡ÀÎ ÀԷ»ó¼ö¿¡ ´ëÇÑ ºÒÈ®½Ç¼ºÀ» °í·ÁÇØÁÖ±â À§ÇÏ¿© ¸Å°³º¯¼öºÐ¼® ¹× ¿¹Ãø¹ýÀ» Á¦½ÃÇÏ¿´´Ù. ¼öÄ¡ÇØ¼®¸ðµ¨À» °³¹ßÇϱâ À§ÇØ »ç¿ëÇÑ ¼öÄ¡ÇØ¼®±â¹ýÀº À¯ÇÑ¿ä¼Ò¹ý°ú À¯ÇÑÂ÷ºÐ¹ýÀ» µ¿½Ã¿¡ ÀÌ¿ëÇÏ¿´´Ù. ÀÌ¿Í °°Àº ¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© 2Â÷¿ø ¼öÄ¡ÇØ¼®¸ðµ¨À» °³¹ßÇÑ ÈÄ, ¼öÄ¡ÇØ¼®¸ðµ¨ÀÇ ÀԷ°ªµéÀÌ °®´Â ºÒÈ®½ÇÇÑ »ó¼öµé¿¡ ´ëÇÑ ¸Å°³º¯¼öºÐ¼®À» ¼öÇàÇÏ¿© º» ¼öÄ¡ÇØ¼®¸ðµ¨ÀÇ ÇöÀå Àû¿ë¼ºÀ» °ËÅäÇÏ¿´´Ù. ¸Å°³º¯¼ö¿¹Ãø¹æ¹ýÀº Maximum-A-Posteriori(MAP)¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© ºÒÈ®½ÇÇÑ ÀԷ»ó¼öÀÎ $K_e$,$psi_e$, b¿¡ ´ëÇÑ ¹è°³º¯¼öºÐ¼®À» ¼öÇàÇÏ¿´´Ù. °³¹ßµÈ ¼öÄ¡ÇØ¼®¸ðµ¨ÀÇ Àû¿ë¼ºÀ» °ËÅäÇϱâ À§ÇØ ½ÇÁ¦ »ê»çŰ¡ ºó¹øÈ÷ ÀϾ´ø ¼¿ï½Ã ½ÃÈﵿ¿¡ À§Ä¡ÇÑ ÇöÀå¿¡ Àû¿ëÇÏ¿© °èÃøµÈ ÁöÇϼöÀ§¿Í ºñ±³, °ËÅäÇÏ¿´´Ù. ÀÌ Àû¿ë°á°ú·ÎºÎÅÍ º»¼öÄ¡ÇØ¼®¸ðµ¨ÀÌ °¿ì·Î ÀÎÇÑ »ê»ç¸é¿¡¼ÀÇ ÁöÇϼöÀ§ »ó½ÂÀ» ºñ±³Àû Àß ¿¹ÃøÇØÁÖ°í ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. |
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| It has been well known that the rainfall-triggered rise of groundwater levels is one of the most important factors resulting the instability of the hillside slopes. Thus, the prediction of porewater pressure is an essential step in the evaluation of landslide hazard. This study involves the development and verification of numerical groundwater flow model for the prediction of groundwater flow fluctuations accounting for both of unsatu³ªtoed flow and saturated flow on steep hillside slopes. The first part of this study is to develop a nomerical groundwater flow model. The numerical technique chosen for this study is the finitro element method in combination with the finite difference method. The finite element method is used to transform the space derivatives and the finite difference method is used to discretize the time domain. The second part of this study is to estimate the unknown model parameters used in the proposed numerical model. There were three parameters to be estimated from input -output record $K_e$, $psi_e$, b. The Maximum -A-Posteriori(MAP) optimization method is utilized for this purpose, . The developed model is applied to a site in Korea where two debris avalanches of large scale and many landslides of small scale were occurred. The results of example analysis show that the numerical groundwater flow model has a capacity of predicting the fluctuation of groundwater levels due to rainfall reasonably well. |
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.10, no.1, 1994³â, pp.47-62
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199411920445308)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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