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Çѱ¹Áö¹Ý°øÇÐȸ / v.26, no.4, 2010³â, pp.59-68
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ÇÊ´ïÀÇ ÆÄÀÌÇÎ ÀçÇö½ÃÇè½Ã Àü±âºñÀúÇ× º¯È ºÐ¼®
( Analysis of Electrical Resistivity Change in Piping Simulation of a Fill Dam ) |
| ¾ÈÈñº¹;ÀÓÈñ´ë; Çѱ¹¼öÀÚ¿ø°ø»ç »ç¾÷ÆÀ;Ãæ³²´ëÇб³;
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| ÆÄÀÌÇÎÀº Á¦Ã¼ ³»ºÎ ħ½ÄÀÇ ÇÑ ÇüÅ·μ Å丳ÀÚÀÇ ÁøÇ༺ À¯Ãâ¿¡ ±âÀÎÇÏ¸ç ±Õ¿ÀÌ ¹ß»ýÇÑ ´ï »Ó¸¸ ¾Æ´Ï¶ó ¿ëÇØ¼º Àç·á·Î ÀÎÇÏ¿© ¼ö³â µ¿¾È ¸¸Á·½º·± °Åµ¿À» º¸ÀÎ ´ïµé¿¡¼µµ ¹ß»ýÇÑ´Ù. ÆÄÀÌÇÎ Çö»óÀº ÇÊ´ïÀÇ ºØ±« ¿øÀÎÀÇ ¾à 50%¸¦ Â÷ÁöÇϰí ÀÖÀ¸¸ç ÇÊ´ï °ü¸®ÀÇ ÁÖ¿äÇ׸ñÀ̳ª, ÀÌ¿¡ ´ëÇÑ Ã¼°èÀûÀÎ Æò°¡¿¡´Â ´Ù¼Ò ¾î·Á¿òÀÌ ÀÖ´Ù. ÀÌ¿¡ º» ¿¬±¸¿¡¼´Â ÆÄÀÌÇÎ Çö»ó¿¡ ´ëÇÑ ºñÆÄ±« ŽÁö¸¦ À§ÇÑ Àü±âºñÀúÇ× Å½»ç±â¹ýÀÇ Àû¿ë¼ºÀ» ÆÄ¾ÇÇϱâ À§ÇØ ´ëû´ï ºñ»ó¿©¼ö·Î °Ç¼³À» À§ÇØ ÇØÃ¼µÇ´Â ºÎ´ï¿¡ ÆÄÀÌÇÎ ¸ð»ç½ÃÇè°ú Àü±âºñÀúÇ× ¸ð´ÏÅ͸µÀ» ¼öÇàÇÏ¿´´Ù. Á¦Ã¼¿¡ ¼öÆò°øÀ» õ°øÇÏ¿© ÀΰøÀûÀÎ À¯·Î¸¦ ¸¸µé°í Àú¼öÁö ¹°À» À¯ÀÔ½ÃÄÑ ½Ç±Ô¸ð ÆÄÀÌÇÎ Çö»óÀ» ¸ð»çÇÏ¿´À¸¸ç, ÆÄÀÌÇÎ Çö»ó ¸ð»ç ½ÃÇèÀü°ú ½ÃÇè Áß ÃøÁ¤ÇÑ Àü±âºñÀúÇ×°ªÀ» ºñ±³ÇÑ °á°ú ÆÄÀÌÇÎ ¹ß»ý ½Ã ÃøÁ¤ÇÑ Àü±âºñÀúÇ×°ªÀÌ Á¶±Ý ´õ Å« º¯È¸¦ º¸ÀÓÀ¸·Î½á Àü±âºñÀúÇ× ¸ð´ÏÅ͸µ Ž»ç´Â ½ÇÁ¦ ´ã¼öµÇ¾î ÀÖ´Â Á¦Ã¼ÀÇ ÆÄÀÌÇÎ Çö»óÀ» È¿°úÀûÀ¸·Î ŽÁöÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. |
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| Piping, a common form of internal embankment erosion, is caused by progressive movement of soil particles through an embankment. The phenomenon commonly occurs with precursory signs of development of fractures in dam structures, but also occurs without any noticeable signs in dams that showed satisfactory dam performance for several years, due to dissolution of soluble material in an embankment. While piping accounts for nearly 50% of the causes for dam failure, few studies have been made for systematic evaluation of the phenomenon. In this study, we attempted to monitor the changes in electrical resistivities of fill-dam material while a saddle dam is dismantled for the construction of emergency spillways of Daechung dam. Two artificial subhorizontal boreholes were drilled into the embankment structure to simulate piping along the two artificial flow channels. Monitoring of changes in electrical resistivity showed an increase in resistivity values during piping. Thus, the investigation of resistivity over time could be an effective method for piping prediction. |
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| Ű¿öµå |
| Electrical resistivity monitoring;Fill dam;Internal embankment erosion;Piping;Safety of embankment; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.26, no.4, 2010³â, pp.59-68
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201021452660544)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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