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Çѱ¹¼öÀÚ¿øÇÐȸ / v.41, no.9, 2008³â, pp.863-872
¿°µµ Á¸Àç½Ã °í·ÉÅä ÅðÀû¹°ÀÇ ÅðÀûƯ¼º »êÁ¤¿¡ °üÇÑ ½ÇÇèÀû ¿¬±¸
( The Laboratory Study on Estimation of Depositional Properties of Kaolinite Sediments on Saltwater Condition )
Ȳ±Ô³²;±è³²ÈÆ;ÀÌ¿µÈ£; ÀüºÏ´ëÇб³ Åä¸ñ°øÇаú.°ø¾÷±â¼ú¿¬±¸¼¾ÅÍ;Ç×µµ ¿£Áö´Ï¾î¸µ Ç׸¸ºÎ;´ë¿ì°Ç¼³ Åä¸ñ»ç¾÷º»ºÎ;
 
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º» ¿¬±¸¿¡¼­´Â ȯÇü¼öÁ¶¸¦ ÀÌ¿ëÇÑ ÀÏ·ÃÀÇ ÅðÀû½ÇÇèÀ» ¼öÇàÇÏ¿©, ¿°¼öÁ¶°Ç(32 %o)¿¡¼­ÀÇ °í·ÉÅä ÅðÀû¹°ÀÇ ÅðÀûƯ¼º »êÁ¤ ¹× ÅðÀûƯ¼º¿¡ ¹ÌÄ¡´Â Ãʱâ³óµµÀÇ ¿µÇâÀ» ºÐ¼® °ËÅäÇÏ¿´´Ù. ¹Ù´ÚÀü´ÜÀÀ·ÂÀ» º¯È­½ÃŰ¸é¼­ °¢±â ´Ù¸¥ 3°¡Áö Ãʱâ³óµµÁ¶°Ç(1000, 5000, 15000 ppm)¿¡¼­ ÃÑ 37ȸÀÇ ÅðÀû½ÇÇèÀÌ ¼öÇàµÇ¾úÀ¸¸ç, ÅðÀû½ÇÇè °á°ú·ÎºÎÅÍ ¿°¼öÁ¶°Ç¿¡¼­ °í·ÉÅä ÅðÀû¹°ÀÇ ÃÖ¼ÒÀü´ÜÀÀ·Â(¶Ç´Â ÅðÀûÇѰèÀü´ÜÀÀ·Â; ${ au}_{bmin}$)°ú ÅðÀû·ü ¸Å°³º¯¼öµé(${sigma}_1,;({ au}^*_b-1)_{50},;{sigma}_2,;t_{50}$)ÀÇ Á¤·®Àû »êÁ¤ ¹× Ãʱâ³óµµ¿Í ¿°µµÀÇ ¿µÇâ¿¡ ´ëÇÑ Á¤¼ºÀû ºÐ¼®ÀÌ ¼öÇàµÇ¾ú´Ù. ±× °á°ú, ${ au}_{bmin},;{sigma}_1$ ¹× $({ au}^*_b-1)_{50}$Àº °¢°¢ 0.147, 0.74, $0.65N/m^2$·Î »êÁ¤µÇ¾úÀ¸¸ç, °ú°Å Ÿ ¿¬±¸°á°ú¿ÍÀÇ ºñ±³ °ËÅ並 ÅëÇÏ¿© º» ½ÇÇè¿¡¼­ µµÃâµÈ °á°úÀÇ Å¸´ç¼ºÀÌ ÀÔÁõµÇ¾ú´Ù.
In this study, a series of deposition tests have been conducted on saltwater condition(salinity 32 %o) using an annular flume, in order to estimate depositional properties of kaolinite sediments and to analyze the effect of the initial concentration on them. Total 37 deposition tests have been carried out in three different initial concentrations (1000, 5000, 15000 ppm) with varying the bed shear stress. From these test results, minimum shear stress (or critical shear stress for deposition; ${ au}_{bmin}$) and the deposition rate parameters (${sigma}_1,;({ au}^*_b-1)_{50},;{sigma}_2,;t_{50}$) for kaolinite sediments have been quantified, and the effects of the initial concentration and salinity on depositional properties of cohesive sediments have been analyzed qualitatively. As the results, ${ au}_{bmin},;{sigma}_1;and;({ au}^*_b-1)_{50}$ are found to be 0.147, 0.74 and $0.65N/m^2$ respectively. Through comparing with results from previous studies, the performance of this study and tests results are shown to be good enough to verify.
 
Ű¿öµå
ÅðÀû·ü;Á¡Âø¼º ÅðÀû¹°;ÃÖ¼ÒÀü´ÜÀÀ·Â;ÅðÀûÇѰèÀü´ÜÀÀ·Â;¿°µµÀÇ ¿µÇâ;Ãʱâ³óµµÀÇ ¿µÇâ;deposition rate;cohesive sediments;minimum shear stress;critical shear stress for deposition;salinity effects;initial concentration effects;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.41, no.9, 2008³â, pp.863-872
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200828955287915)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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ȸ»ç¼Ò°³ ±¤°í¾È³» ÀÌ¿ë¾à°ü °³ÀÎÁ¤º¸Ãë±Þ¹æÄ§ Ã¥ÀÓÀÇ ÇѰè¿Í ¹ýÀû°íÁö À̸ÞÀÏÁÖ¼Ò ¹«´Ü¼öÁý °ÅºÎ °í°´¼¾ÅÍ
   

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