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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.3, 2003³â, pp.39-44
ĸÀÌ ¼³Ä¡µÈ ÅðÀûÃþÀÇ ¾Ð¹Ð ħÇÏ (II): °£±Ø¼öÀÇ À̵¿ ¹× ħÇÏÀÇ ÇØ¼®Àû ¿¹Ãø
( Consolidation Settlement of Capped Sediment (II): Advective Transport of Pore Water and Analytical Prediction of Settlement )
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ĸÀÌ ¼³Ä¡µÈ ¿À¿°µÈ ÇØ¼º ÅðÀûÃþÀÇ ¾Ð¹ÐħÇϸ¦ ¿¬±¸Çϱâ À§ÇØ ¿ø½É¸ðÇü ½ÇÇèÀÌ ½Ç½Ã µÇ¾ú´Ù. °£±Ø¼öÀÇ À̵¿À» °üÃøÇϱâ À§ÇØ Çü±¤»ö ¿°·á°¡ »ç¿ëµÇ¾ú´Ù. ¿°·áÀ̵¿À» ÃßÀûÇÑ °á°ú ¾Ð¹Ð¿¡ ÀÇÇÑ ¿À¿°¿øÀÇ ÀÌ·ùÀ̵¿ÀÌ È®½ÇÈ÷ ³ªÅ¸³µ´Ù. ±×·¯¹Ç·Î ¾Ð¹Ð¿¡ ÀÇÇÑ ¿À¿°¿øÀÇ ÀÌ·ùÀ̵¿À» °¨¼Ò½Ã۱â À§ÇØ Ä¸ÇÎÀ» ÀûÀýÇÏ°Ô ¼³°èÇØ¾ß¸¸ ÇÑ´Ù. ±×¸®°í, ¿ø½É¸ðÇü½ÇÇè °á°ú¿Í ĸÀÌ ¼³Ä¡µÈ ÇØ¼º ÅðÀûÃþÀÇ ¾Ð¹ÐħÇϸ¦ ¿¹ÃøÇÒ ¼ö ÀÖ´Â PSDDF ÇÁ·Î±×·¥À¸·Î ¿¹ÃøµÈ °ªÀÌ ºñ±³µÇ¾ú´Ù. ¿ø½É¸ðÇü½ÇÇè°á°ú¿Í PSDDF ¿¹ÃøÄ¡ ºñ±³¿¡¼­ ¿øÇü½Ã°£ÀÌ 18³â ÀÌÈÄ¿¡´Â ¿ø½É¸ðÇü½ÇÇè °á°ú¿Í PSDDF ¿¹ÃøÄ¡°¡ ´ëü·Î Àß ÀÏÄ¡ÇÏÁö¸¸, ¿øÇü½Ã°£ 6³â¿¡¼­ µÎ °á°ú »çÀÌ¿¡ ÃÖ´ë 20% °¡±î¿î °ÝÂ÷°¡ ³ªÅ¸³µ´Ù. ±×·¯¹Ç·Î ¼³°èÀÚ´Â PSDDF ÇÁ·Î±×·¥¿¡ ÀÇÇØ ¾òÀº ¾Ð¹ÐħÇÏ °á°ú¸¦ »ç¿ë ½Ã ÁÖÀǰ¡ ¿ä±¸µÈ´Ù.
Centrifuge test was conducted to simulate the effects of consolidation settlement of capped contaminated marine sediment. A fluorescent dye was used to monitor the movement of pore water through the cap layer. Dye tracer study clearly showed the consolidation induced advective transport of contaminants. Thus, the capping layer must be appropriately designed to reduce the effects of consolidation induced advective transport. The results from the centrifuge test were compared to predictions made by the Primary consolidation, Secondary compression, and Desiccation of Dredged Fill (PSDDF) computer program, which can qualitatively estimate the consolidation settlement of capped marine sediment. Although PSDDF approximated closely the secondary compression in the centrifuge test (i.e., compare data points from 18 to 25 prototype years), the maximum deviation between centrifuge test result and PSDDF prediction was 20 % about prototype time 6 years. Thus, designers should utilize PSDDF consolidation settlement results with caution.
 
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Advection;Capping;Consolidation;PSDDF;Sediment;Settlement;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.3, 2003³â, pp.39-44
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921763532)
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