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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.6, 2004³â, pp.95-107
½½·¯¸® ½¯µå ÅͳÎÀÇ ¸·Àå ¾ÈÁ¤¼º Æò°¡ - ½½·¯¸®ÀÇ Æó»öÈ¿°ú¸¦ Áß½ÉÀ¸·Î -
( Face Stability Assessment of Slurry-shield Tunnels - Concentrating on Slurry Clogging Effect - )
ÀÌÀθð;ÀÌ»ù;Á¶±¹È¯; °í·Á´ëÇб³ °ø°ú´ëÇÐ »çȸȯ°æ ½Ã½ºÅÛ°øÇаú;(ÁÖ)´Ù»êÄÁ¼³ÅÏÆ® Áö¹Ý°øÇкÎ;°í·Á´ëÇб³ ºÎ¼³ ¹æÀç°úÇбâ¼ú¿¬±¸¼¾ÅÍ;
 
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½½·¯¸® ½¯µå Åͳο¡¼­ ½½·¯¸® ħÅõÀÇ À¯µ¿ÇÐÀû Ư¼ºÀº ¸·Àå¾ÈÁ¤¼º Ãø¸é¿¡¼­ Áß¿äÇÏ´Ù. ƯÈ÷, ½½·¯¸®ÀÇ Ä§Åõ´Â ¸·Àå ¾ÈÁ¤¼º¿¡ Å« ¿µÇâÀ» ¹ÌÄ¡¸ç, º» ¿¬±¸¿¡¼­ ÀÌ·± À¯µ¿ÇÐÀû Ư¼ºÀ» ÆÄ¾ÇÇϱâ À§ÇÏ¿© Èë-ÇÊÅÍÀÇ Æó»öÀÌ·ÐÀ» Àû¿ëÇÏ¿´´Ù. Åͳνðø µµÁß ½½·¯¸® Æó»öÀÇ ÁöÇ¥·Î ÇÊÅͰè¼ö¸¦ »ç¿ëÇÏ¿´À¸¸ç, ½Ç³»½ÇÇèÀ» ÅëÇØ ÀÌÀÇ Àû¿ë¼ºÀ» ±Ô¸íÇÏ¿´´Ù. ½Ç³»½ÇÇèÀÇ °á°ú¸¦ ¹ÙÅÁÀ¸·Î ÇÑ ¾ÈÁ¤Çؼ® °á°ú, ¸·Àå¾ÈÁ¤¼ºÀº ħÅõ¼Óµµ¿Í ÇÊÅͰè¼öÀÇ ºñÀ²¿¡ ¿µÇâÀ» ¹ÞÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ, ½½·¯¸®ÀÇ Ä§Åõ±íÀ̴ ħÅõ¼Óµµ¿Í ÇÊÅͰè¼öÀÇ ºñÀ²°ú ÇÔ²² Áõ°¡ÇÏ´Â °æÇâÀ» º¸¿´´Ù. ¸·Àå¾ÈÁ¤¼ºÀº ħÅõ°Å¸®°¡ Áõ°¡ÇÏ¸é °¨¼ÒÇÏ´Â °æÇâÀ» º¸¿´À¸¸ç, ħÅõ°Å ¸®¸¦ ÁÙÀ̱â À§ÇÏ¿© ½½·¯¸®¿¡ ÷°¡Á¦¸¦ ÷°¡ÇÏ¿´´Ù. ½ÇÇè¿¡ ±Ù°ÅÇÑ ºÐ¼®°á°ú ÷°¡Á¦°¡ ÇÊ¿äÇÑ ÇѰè À¯È¿ÀÔ°æ$(D_{10})$Àº ¾à 0.75mmÀÓÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ½½·¯¸® ħÅõ·Î ÀÎÇÑ ¸·Àå ¾ÈÁ¤¼ºÀº Åͳΰø»ç½ÃÀÇ ±¼Áø¼Óµµ¿¡µµ Å©°Ô ¿µÇâÀ» ¹ÞÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù.
In this paper, the rheological characteristics of slurry used fur slurry-shield tunnels were studied with emphasis on penetration characteristics. The slurry penetration was modeled by soil-filter clogging theory. The coefficient of particle deposition was suggested as an indicator of sin clogging during tunnel construction and calculated through model tests. The measured slurry weight, clogged in the base soil, was compared with the value obtained from clogging theory. Based on the testing results, a stability analysis of a tunnel face was performed to pinpoint the most influential factor affecting stability of slurry-shield tunnels. It was found that the stability of tunnel face is dependent on the ratio of infiltration velocity to the coefficient of particle deposition, and the penetration distance of slurry increases with the ratio of infiltration velocity to the coefficient of particle deposition. Since the stability of tunnel face decreases with the slurry penetration distance, it was necessary to add some additives in order to reduce the slurry penetration distance. It was found that the ground condition needs additives when the soil has the effective particle diameter$(D_{10})$ larger than 0.75mm. It was also found that the tunnel face stability due to slurry penetration is significantly affected by the tunnel advance rate.
 
Ű¿öµå
Face stability;Rheological characteristic;Slurry;Slurry-shield tunnel;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.6, 2004³â, pp.95-107
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922634127)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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