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Çѱ¹Áö¹Ý°øÇÐȸ / v.26, no.4, 2010³â, pp.47-58
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Áß½ÉÄÚ¾îÇü »ç·Â´ïÀÇ ÄÚ¾îÁÔ Ä§Åõ·® ¿¹Ãø±â¹ý
( Estimation of Seepage Rate through Core Zone of Rockfill Dam ) |
| ÀÌÁ¾¿í;ÀÓÈñ´ë; Çѱ¹¼öÀÚ¿ø°ø»ç K-WATER¿¬±¸¿ø;Ãæ³²´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
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| ºÒÆ÷È È帧À» °í·ÁÇÏÁö ¾Ê´Â µµÇعý (Casagrande, 1961; Cedergren, 1997)°ú ±Ù»ç½Ä(Sakamoto, 1998)¿¡ ÀÇÇÑ Áß½ÉÄÚ¾îÇü »ç·Â´ï ÄÚ¾îÁÔÀÇ Ä§Åõ·®Àº ½ÇÁ¦ ħÅõ°Åµ¿°ú´Â Â÷À̰¡ ÀÖ°í, Àú¼öÀ§ º¯È¿¡ ´ëÇÑ Ä§Åõ·® º¯È°æÇâÀÇ ÆÄ¾Çµµ °ï¶õÇÏ´Ù. º» ¿¬±¸¿¡¼´Â ¼Ò¾ç°´ï¿¡ ´ëÇÑ 2Â÷¿ø Á¤»ó»óÅ ¹× ºñÁ¤»ó»óÅ ħÅõ·ùÇØ¼®À¸·Î Àú¼öÀ§, Æ÷ÈÅõ¼ö°è¼ö, ºÒÆ÷ȼö¸®Æ¯¼º º¯È¿¡ ´ëÇÑ Á¤»ó»óÅ ħÅõ·®°ú Á¤»ó»óÅ µµ´Þ½Ã°£¿¡ ¹ÌÄ¡´Â ¿µÇâ¿äÀÎÀ» ºÐ¼®ÇÏ¿´´Ù. ºÐ¼®°á°ú ħÅõ·®Àº Á¤±ÔÈµÈ ¼±Çü °ü°è½ÄÀ¸·Î ¿¹ÃøÀÌ °¡´ÉÇϰí, ºÒÆ÷È ¿¹Ãøº¯¼ö nÀÌ Á¤»ó»óÅ ħÅõ·®°ú Á¤»ó»óÅ µµ´Þ½Ã°£¿¡ °¡Àå Å« ¿µÇâÀ» ÁÖ¾ú´Ù. º» ¿¬±¸¿¡¼ Á¦½ÃÇÑ ¿¹Ãø±â¹ýÀº º¹ÀâÇÑ 3Â÷¿ø ÇØ¼® ¹× ¿©·¯ ´Ü¸é¿¡ ´ëÇÑ 2Â÷¿ø ÇØ¼®À» ¼öÇàÇÏÁö ¾Ê°íµµ ´ï ¼³°èÀÚ ¹× ¾ÈÀü°ü¸® ½Ç¹«ÀÚ°¡ Áß½ÉÄÚ¾îÇü »ç·Â´ïÀÇ Ä§Åõ·®À» »êÁ¤ÇÏ¿© ½ÇÃøÄ¡¿ÍÀÇ Á¤·®Àû ºÐ¼®¿¡ ¼Õ½±°Ô ÀÌ¿ëÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î »ý°¢µÈ´Ù. |
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| Seepage rate through the core zone of rockfill dam, estimated from graphical technique and the equation by Sakamoto (1998), is different from the real condition because of neglecting unsaturated flow. With existing method to estimate total seepage rate, it is difficult to understand the tendency of total seepage rate changes by reservoir water level change. Steady state seepage rate and the factors affecting the time needed to attain to changes of reservoir water level and saturated hydraulic conductivity and unsaturated hydraulic properties of core material are analysed thorough the 2-D steady and unsteady state seepage analyses of Soyanggang dam. Numerical results revealed that the seepage rate can be expressed by the linear equation form and the value of unsaturated soil parameter n is the most important factor affecting the seepage rate and the time needed to attain steady state. The estimation method presented in this study can be used by the designer and the personnel of dam safety for convenient estimation of seepage rate and quantitative analysis of measured seepage rate without 2-D and 3-D numerical analyses. |
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| Ű¿öµå |
| Core zone;Numerical modelling;Rockfill dam;Seepage rate;Unsaturated soil; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.26, no.4, 2010³â, pp.47-58
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201021452660542)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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