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Çѱ¹¼öÀÚ¿øÇÐȸ / v.38, no.4, 2005³â, pp.313-321
±âÆ÷¿¡ ÀÇÇÑ Á¡Âø¼º ÅðÀû¹°ÀÇ ºÎÀ¯
( Resuspension of Cohesive Sediment under Presence of Gas Bubbles )
±èÁ¾¿ì; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ¼öÀÚ¿ø¿¬±¸ºÎ;
 
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Ç׸¸ ¹× Àú¼öÁö¿¡¼­ Á¡Âø¼º ÅðÀû¹°ÀÇ Ä§½Ä ¹× Á¦°Å´Â ±Øµµ·Î Å« ¿¡³ÊÁö¸¦ µ¿¹ÝÇÑ ±â°èÀûÀÎ ¹èÃâ¹æ¹ýÀ¸·Î ´ÜÁö °¡´ÉÇÒ ¼ö ÀÖ´Ù. ¼ÒÀ§ ºÐ»ç¹æ¹ýÀº ³ôÀº Àü´Ü·Â¿¡µµ ºÒ±¸Çϰí Á¡Âø¼º ÅðÀû¹°À» ¿òÁ÷ÀÌ°Ô Çϴµ¥ ½ÇÈ¿¸¦ °ÅµÎÁö ¸øÇϰí ÀÖ´Ù. ±×·¯¹Ç·Î º» ¿¬±¸´Â ´Ù¸ñÀû´ï, Ç׸¸ ±×¸®°í È£¼ö µî¿¡¼­ ÅðÀûµÈ Á¡Âø¼º ¹Ì¸³ÀÚµéÀ» Àú°¨½Ã۱â À§ÇØ ±âÆ÷ ÅõÀÔÀ¸·Î ħÀüµÈ ¹Ì¸³ÀÚ($Al_{2}O_3$)ÀÇ ºÎÀ¯Çö»óÀ» ½ÇÇèÇϴµ¥ ¸ñÀûÀ» µÎ°í ÀÖ´Ù. ½ÇÇèÀ» ÅëÇØ Áß¿äÇÑ ¸Å°³º¯¼ö´Â ÅõÀÔµÈ ±âÆ÷ÀÇ ¾ç°ú ħÀüµÈ ÅðÀû¹°ÀÇ ÀÀ°í½Ã°£ÀÎ °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ±âÆ÷ ÅõÀÔ¾øÀÌ ³ôÀº pH°ª¿¡¼­ »¡¸® ħÀüµÇ´Â ¹Ì¸³ÀÚ ÅðÀû¹°(alumina)Àº ±âÆ÷ÀÇ Áõ°¡·Î ÀÔÀÚÀÇ ºÎÀ¯Çö»óÀÌ ÀϾ´Ù.
The elimination and erosion of cohesive sediments in port and reservoir water can so far be processed only with mechanical evacuation methods under extreme energy expenditure. The so-called flushing jets do not serve the purpose because they cannot set the material spaciously in motion despite high shear stresses at the bed. Therefore this study aims to examine the resuspension of the deposited fine material($Al_{2}O_3$) under presence of gas bubbles in order to decreased cohesive sediments in multipurpose dam, port and lakes. In the case of laboratory trial important parameters considered are supplied amount of air and the consolidation time of the solid materials. With increasing gas content alumina remains in suspension at high pH values in the laboratory test, where the particles fall mote rapidly without air addition.
 
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Á¡Âø¼º ÅðÀû¹°;ºÎÀ¯»ç;ħ½Ä;ÀÀ°í;±âÆ÷;cohesive sediment;resuspension;erosion;consolidation;bubbles;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.38, no.4, 2005³â, pp.313-321
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200531234572859)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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