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Çѱ¹¼öÀÚ¿øÇÐȸ / v.35, no.5, 2002³â, pp.511-523
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ÀçÆø±â È¿À² Áõ°¡¸¦ À§ÇÑ ·¡¹ö¸°½º º¸¿¡ °üÇÑ ¿¬±¸
( A Study on the Labyrinth Weir for Improvement of Reaeration ) |
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| ÀçÆø±â È¿À²ÀÌ Çâ»óµÈ º¸¸¦ °³¹ßÇϱâ À§ÇÏ¿© Á÷¼±Çü º¸, ¿©¼ö·ÎÇü º¸, ·¡¹ö¸°½º º¸ÀÇ ÀçÆø±â ½ÇÇèÀ» ÅëÇØ »ê¼ÒÀü´ÞÈ¿À²À» ÃøÁ¤ÇÏ¿© °á°ú·Ð ºñ±³ÇÏ¿´°í, ¶ÇÇÑ Á¦Á¤ÀÇ Á¶µµ¸¦ Áõ°¡½ÃÄÑ ±× È¿°ú¸¦ ºÐ¼®ÇÏ¿´´Ù. ½ÇÇè °á°ú¿¡ ÀÇÇÏ¸é ¿©¼ö·Î Çü º¸¿¡¼ÀÇ »ê¼ÒÀü´ÞÈ¿À²ÀÌ °¡Àå ÀÛÀ¸¸ç ±× ´ÙÀ½À¸·Î Á÷¼± º¸¿´À¸¸ç ·¡¹ö¸°½º º¸ÀÇ °æ¿ì Á߽ɰ¢ÀÌ °¨¼ÒÇÒ¼ö·Ï »ê¼ÒÀü´ÞÈ¿À²ÀÌ Áõ°¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¸ðµç °æ¿ì¿¡ ÀÖ¾î¼ ³«Â÷¿Í À¯·®ÀÌ Áõ°¡ÇÒ¼ö·Ï »ê¼ÒÀü´ÞÈ¿À²ÀÌ Áõ°¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç Á¶¾àµ¹À» ºÎÂøÇÏ¿© Á¦Á¤ÀÇ Á¶µµ¸¦ Áõ°¡½ÃÄÑ ¿ù·ù È帧ÀÇ ºÐ¸®¸¦ ¹ß»ý½ÃŲ °æ¿ì ÀçÆø±â°¡ »ó´çÈ÷ Áõ°¡µÇ´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. ½ÇÇè °á°ú·ÎºÎÅÍ Á߽ɰ¢ 30µµÀÎ ·¡¹ö¸°½º º¸¸¦ ÇöÀå¿¡ ¼³Ä¡ÇÏ¿© ÀçÆø±â¸¦ °üÃøÇÏ¿´´Ù. ÇöÀå¿¡ ¼³Ä¡µÈ ·¡¹ö¸°½º º¸´Â ƲÀ» Á¶¸³ÇÏ¿© ±× ³»ºÎ¿¡ »ç¼®À» ä¿ö °Ç¼³µÇ¾úÀ¸¸ç Á¦Á¤¿¡´Â »ç¼®ÀÌ ³ëÃâµÇ¾î È帧ÀÇ ºÐ¸®¸¦ À¯¹ßÇÏ¿´´Ù. ·¡¹ö¸°½º º¸ÀÇ ÇöÀå ½ÃÇè ½Ã°ø Á¶°Ç¿¡¼ Æò±Õ ¾à 0.l8ÀÇ »ê¼ÒÀü´ÞÈ¿À² °á°ú¸¦ ¾òÀ»¼ö ÀÖ¾ú´Ù. º» ½ÇÇè ¿¬±¸¿Í ÇöÀå ¼³Ä¡ ÈÄ ÃøÁ¤ °á°ú´Â ÀçÆø±â È¿À²ÀÌ ³ôÀº º¸¸¦ ÅëÇÑ ÇÏõ ¼öÁú °³¼±¿¡ »ç¿ëµÉ ¼ö ÀÖÀ» °ÍÀÌ¶ó ¿¹»óµÈ´Ù. |
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| In order to develop the weir with high reaeration efficiency, the reaeration experiments at linear weir, ogee spillway type weir, and labyrinth weirs were conducted and the results were compared. The effect of roughened crest was also analyzed. It was found from the experiments that the oxygen transfer efficiency at the ogee spillway type weir was the lowest and that at the linear weir was second lowest among the weirs used in the experiments. It was also revealed that the reaeration efficiencies of the labyrinth weirs increase as the included angles become smaller. The roughened crest which causes the disintegration of overflow was found to increase the reaeration efficiency significantly. On the basis of the results of the experiments, the pilot construction of the labyrinth welt with included angle of 30 degree was made. The labyrinth weir was made up by assembling the frame and then filling the ripraps into the frame. The ripraps were exposed at the crest to split the overflow. The average value of oxygen transfer efficiency observed at the pilot weir was 0.18. It is expected that the results from the experimental study and the field data of the pilot weir would serve for the improvement of water quality by the weirs with high reaeration efficiency. |
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| Ű¿öµå |
| º¸;ÀçÆø±â;·¡¹ö¸°½º º¸;»ê¼ÒÀü´ÞÈ¿À²;weir;reaeration;labyrinth weir;oxygen transfer efficiency; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.35, no.5, 2002³â, pp.511-523
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921444984)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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