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Çѱ¹¼öÀÚ¿øÇÐȸ / v.42, no.12, 2009³â, pp.1113-1124
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û¹Ìõ ±¸Çϵµ º¹¿ø ¼³°è¸¦ À§ÇÑ ÇϵµÇü¼ºÀ¯·® »êÁ¤
( Evaluation of Channel-forming Discharge for the Abandoned Channel Restoration Design of Cheongmi Stream ) |
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| ±¸Çϵµ ¹× Æóõº¹¿øÀº ÇÏõ¿¡¼ÀÇ À̼ö¿Í Ä¡¼öÀûÀÎ ±â´É»Ó¸¸ ¾Æ´Ï¶ó ȯ°æ ¹× »ýÅ ¼½Äó ±â´ÉÀ» °ÈÇÏ°í °³¼±Çϱâ À§ÇÑ ¿©·¯ ¹æ¹ýµé Áß ÇϳªÀ̸ç ÀÌ·¯ÇÑ ±¸Çϵµ¸¦ º¹¿øÇϱâ À§Çؼ´Â ÁÖ¼ö·Î¿ÍÀÇ Çϵµ ¾ÈÁ¤¼ºÀ» °í·ÁÇÏ¿© Ⱦ´Ü¸é ÇüŸ¦ °áÁ¤Çϰí Çϵµ¼±ÇüÀ» ¼³°èÇÏ°Ô µÈ´Ù. ÀÌ·¯ÇÑ Çϵµ¼³°è½Ã ±âÁØÀÌ µÇ´Â À¯·®ÀÌ ¹Ýµå½Ã ÇÊ¿äÇϸç ÀÌ ±âÁØÀ¯·®À» ÇϵµÇü¼ºÀ¯·® ¶Ç´Â Áö¹èÀ¯·®À̶ó°í ÇÑ´Ù. ÀϹÝÀûÀ¸·Î ÇϵµÇü¼ºÀ¯·®À» »êÁ¤ÇÏ´Â ¹æ¹ýÀ¸·Î´Â ¸¸Á¦À¯·®, ƯÁ¤ ÀçÇö±â°£º° À¯·®, À¯È¿À¯·®À» °è»êÇÏ¿© °áÁ¤ÇÏ´Â ¹æ¹ýÀÌ ÀÖ´Ù. º» ¿¬±¸¿¡¼´Â ±¸Çϵµ º¹¿ø »ç¾÷ÀÌ ½ÃÇàµÇ´Â û¹Ìõ ±¸°£¿¡ ´ëÇØ ¸¸Á¦À¯·®, ƯÁ¤ ÀçÇö±â°£º° À¯·®, À¯È¿À¯·®À» »êÁ¤ÇÏ¿© »óÈ£ °ü°è¸¦ ºÐ¼®ÇÏ°í °ú°ÅÀÇ Çϻ󺯵¿ Ư¼º ÀÚ·á¿Í ºñ±³ÇÏ¿© ¿¬°ü¼ºÀ» Æò°¡ÇÏ¿´´Ù. û¹Ìõ ±¸Çϵµ º¹¿ø±¸°£ÀÇ ¸¸Á¦À¯·®Àº HEC-RAS ÀڷḦ ÀÌ¿ëÇÏ¿© ¸¸Á¦¼öÀ§¿¡ ÇØ´çµÇ´Â À¯·®À¸·Î »êÁ¤ÇÏ¿´À¸¸ç 488 $m^3/s$ÀÎ °ÍÀ¸·Î ³ªÅ¸³µ°í ÀÌ´Â 1.5³â°ú 2³â ºóµµ »çÀÌÀÇ À¯·®¿¡ Æ÷ÇԵǴ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ À¯»ç·® ÀÚ·á¿Í °ú°Å ÀÏÀ¯·® ÀڷḦ ÀÌ¿ëÇÏ¿© °è»êµÈ À¯È¿À¯·®Àº ¸¸Á¦À¯·®º¸´Ù Å« °ªÀ» °®´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. °ú°Å Ãø·®ÀÚ·á ºÐ¼®¿¡ ÀÇÇϸé û¹ÌõÀÇ ´ë»ó±¸°£ Çϵµ´Â 1994³â¿¡ ºñÇØ 2008³â ÇöÀç Çϵµ°¡ ħ½ÄµÈ °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç ÀÌ´Â À¯È¿À¯·®À» ¼ÒÅë½Ãų ¼ö ÀÖ´Â ÇüÅ·ΠÇϵµ°¡ ÁøÈÇϰí ÀÖ´Ù´Â °ÍÀ» ÀǹÌÇÏ¸ç °ð ÇÏõÀÌ ¾ÈÁ¤ÇÑ »óÅ·Πº¯ÈÇϰí ÀÖ´Ù´Â °ÍÀ» ÀǹÌÇÑ´Ù. |
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| The abandoned channel restoration is one of methods to enhance the environmental function and ecological habitat as well as the functions of water-utilization and flood control. The channel-forming or dominant discharge must be evaluated and defined to design the cross-sectional and plane geometries of the stable and equilibrium channel for the abandoned channel restoration project. In general, bankfull discharge, specified recurrence interval discharge, and effective discharge have been used to decide the channel-forming discharge. In this study, bankfull discharge, specified recurrence interval discharge, and effective discharge were calculated and compared for the abandoned channel restoration site of Cheongmi Stream and their relations to historical bed changes were analyzed. The bankfull discharge, 488 $m^3/s$, of the abandoned channel restoration site of Cheongmi Stream was calculated using HEC-RAS data and ranged between 1.5-year and 2-year recurrence discharges. Also, the effective discharge evaluated with the sediment rating curve and mean daily discharge data is greater than the bankfull discharge. According to the survey data of 1994 and 2008, the bed elevation of the study reach was decreased over time. It is indicated that the channel bed is changing to the stable condition to allow the effective discharge. |
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| ÇÏõº¹¿ø;±¸Çϵµ º¹¿ø;Áö¹èÀ¯·®;ÇϵµÇü¼ºÀ¯·®;¸¸Á¦À¯·®;ƯÁ¤ ÀçÇö±â°£º° À¯·®;À¯È¿À¯·®;river restoration;abandoned channel restoration;dominant discharge;channel-forming discharge;bankfull discharge;specified recurrence interval discharge;effective discharge; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.42, no.12, 2009³â, pp.1113-1124
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200903538424652)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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