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Çѱ¹¼öÀÚ¿øÇÐȸ / v.26, no.1, 1993³â, pp.63-69
Á¡ÅäÁú ¸ð·¡¿¡¼­ÀÇ UltrasonicÀ» ÀÌ¿ëÇÑ Åõ¼ö¼ºÀÇ ÁõÁø
( Ultrasonic Engancement of Flow in Clayey Sands )
À̱¤¿­; Á¤È¸¿ø, Ph. D, Manager, Sunkyoung E/C Ltd.;
 
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¸Å¸³ÀÌ ¿Ï·áµÈ LandfillsÀ̳ª ¿À¿°µÈ ÁöÇϼöÀÇ ¿À¿°¹°ÁúÀ» Á¦°ÅÇÏ¿© ´Ù¸¥ ¿ëµµ·Î Àç»ç¿ëÇÏ´Â ±â¼úÀÌ ¿À´Ã³¯ Áß¿äÇÑ ¹®Á¦·Î ´ëµÎµÇ°í ÀÖ´Ù. Áøµ¿À» ÀÌ¿ëÇÏ¿© Á¦°¡È¿À²À» ³ôÈ÷´Â ¹æ¹ýÀº ¿äÁò ÈçÈ÷ »ç¿ëµÇ°í ÀÖ´Â ¹æ¹ýÁßÀÇ ÇϳªÀÌ´Ù. UltrasonicÀÇ È¿°ú¸¦ »ç¿ëÇÔÀ¸·Î½á, ±â°èÀûÀÎ Á¦°ÅÈ¿°ú°¡ ´ë´ÜÇÏ´Ù´Â °ÍÀº ÀÌ¹Ì ¸î¸î ¿¬±¸Àڵ鿡 ÀÇÇØ È®Àεȹ٠ÀÖ´Ù. ÀÌ ¿¬±¸¿¡¼­´Â Probe-Type Lutrasonic Processor¸¦ »ç¿ëÇÏ¿© Clayey-Sand Chamber¸¦ °¡Áö°í ½ÇÇèÀ» ÇØº¸¾Ò´Ù. ½ÇÇèÁß °è¼ÓÀûÀÎ Pumping°ú ÇÔ²² UltrasonicÀ» ÀÛµ¿½ÃŲ °á°ú, Clayey ÀÔÀÚµéÀÇ ºÐ¸® ¹× Á¦°Å¿¡ Å« È¿°ú¸¦ ¾ò¾úÀ¸¸ç, ±×·Î ÀÎÇÏ¿© Åõ¼ö°è¼ö°¡ Å©°Ô Áõ°¡ÇÏ´Â È¿°ú¸¦ º¸¾Ò´Ù. ¶ÇÇÑ, ½ÇÇè Àü°ú ÈÄÀÇ ÀÔÀÚÅ©±âÀÇ ºÐÆ÷µµ°¡ Å©°Ô º¯Çߴµ¥, ±× ÀÌÀ¯´Â UltrasonicÀÇ Áøµ¿È¿°ú ¶§¹®ÀÌ´Ù. ½ÇÇè°á°ú, 0.004mm ÀÌÇÏÀÇ ÀÔÀÚµéÀº UltrasonicÀÇ È¿°ú¿¡ ÀÇÇØ MobilizeµÇ¾úÀ¸¸ç, 0.04-1.0mmÀÇ ÀÔÀÚ´Â ºÎ¼­Á®¼­ ÀÛÀº ÀÔÀÚ·Î µÇ¾ú´Ù. ÀÌ ±â±¸¸¦ »ç¿ëÇϱâ À§ÇÑ À¯Áöºñ¿Í Àü·ÂºñµîÀ» °í·ÁÇÏ¿© ÀÌ ±â±¸ÀÇ ½Ç¿ë¼ºÀ» °ËÅäÇØ º¸¾Ò´Ù. ÇÊ¿äÇÑ Power¸¦ À§ÇØ ¿ä±¸µÇ´Â Àü·ÂÀÇ ¾çÀº ±íÀÌ¿¡ ÀÇÇÑ ´ë»ó siteÀÇ ÀÀ·Â, ¿Âµµ, ±×¸®°í FuidÀÇ Viscosity¿¡ ÀÇÇØ Á¿ìµÇ¸ç, ±×Áß °¡Àå Å« ¿µÇâÀ» ¹ÌÄ¡´Â ¿ä¼Ò´Â ÈëÀÇ ±íÀÌÀÌ´Ù. ¿©·¯ °¡ÁöÀÇ ´Ù¸¥ ±íÀÌ¿¡¼­ÀÇ °æÁ¦ÀûÀÎ ½Ç¿ë¼ºÀ» 1.0, 2.0in Á÷°æÀÇ Horn Sonicator¸¦ »ç¿ëÇßÀ» °æ¿ì¿¡ ´ëÇÏ¿© ºñ±³¿Í ºÐ¼®À» ÇÏ¿´´Ù.
Remediation technology becomes an issue in environmental engineering. The vibro-recovery technique is one of popular means to remove pollutants from contaminated soils and groundwater. Using Ultrasonic excitation in soil-fluid medium, it was found that removal efficiency in a mechanical effects was significant. In this paper, therefore, laboratory experiments were conducted on clayey sand soil columns using a probe-type ultrasonic processor. Ultrasonic treatment with simultaneous pumping enhances dislodgement of clay particles, and ultrasonic excitation reduced the proportions of finer particles and thus result in increased hydraulic conductivity significantly. Also, the results provided the changes in grain size distribution curve of the soil due to ultrasonic excitation. The results indicated that the maximum size of particles mobilized by Ultrasonic is about 0.004mm and particles in the size range from 0.04mm to 1.0mm were subjected to fracturing. The economic feasibility of Ultrasonic implementation is considered in power requirement of the generator and maintenance of the horn. At a specified amplitude of vibrations, the power requirement of the generator depends on overburden pressure of the horn, temperature and viscosity of fluid in the soil medium. For comparisons, the requirement of a one inch and two inch diameter horn sonicators are compared with the power required for pumping water from different depths.
 
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.26, no.1, 1993³â, pp.63-69
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199311920094333)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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