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Çѱ¹¼öÀÚ¿øÇÐȸ / v.40, no.3, 2007³â, pp.265-276
°³¼ö·Î¿¡¼­ ½Ä»ý¿¡ ÀÇÇÑ ¼ö¸®Æ¯¼º º¯È­¿¡ °üÇÑ ½ÇÇèÀû ¿¬±¸
( An Experimental Study on the Variation of Hydraulic Characteristics due to Vegetation in Open Channel )
ÀÌÁØÈ£;À±¼¼ÀÇ; °æ±â´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;°æ±â´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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È«¼öÅÍ¿¡ ½Ä»ýµÈ Çϵµ¿¡¼­ ¼ö¸®ÇÐÀû Ư¼ºÀÇ ÀÌÇØ´Â ÇÏõº¹¿ø»ç¾÷À» °èȹÇϰųª È«¼öÅ͸¦ °ü¸®Çϴµ¥ Áß¿äÇÏ´Ù. º» ¿¬±¸¿¡¼­´Â ±æÀÌ 16 m£¬Æø 0.8 m ÀÇ ½ÇÇè¼ö·Î¿¡ Àΰø½Ä»ýÀ» ÀÌ¿ëÇÏ¿© ¼ö¸®ÇÐÀû Ư¼ºº¯È­¸¦ ºÐ¼®ÇÏ¿´´Ù. ½ÇÇè¼ö·Î ´Ü¸éÀº ´Ü´Ü¸é°ú º¹´Ü¸éÀ¸·Î ±¸ºÐÇÏ¿´´Ù. ÇÏ»ó°æ»ç´Â 0.5 %£¬À¯·®Àº $0.2;m^3/s;{sim};0.4;m^3/s$ ¹üÀ§ÀÌ°í£¬¼ö½Éºñ£¬½Ä»ý¹Ðµµ, ½Ä»ý À§Ä¡¸¦ º¯È­½ÃŰ¸é¼­ ½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ´Ü´Ü¸é ¼ö·Î Àú¸é¿¡ ½Ä»ýÇÏ¿´À» °æ¿ì ¼ö½Éºñ°¡ ¾à£¬3.5 ÀÌ»óºÎÅÍ´Â ½Ä»ý¿¡ ÀÇÇÑ ¼öÀ§ Áõ°¡´Â °ÅÀÇ ¾ø´Â °ÍÀ¸·Î °üÃøµÇ¾ú´Ù. º¹´Ü¸é È«¼öÅÍ¿¡ °ü¸ñÀ» ½Ä»ý ÇÒ °æ¿ì ¼öÀ§ »ó½Â·®Àº ÃÖ´ë 6% Á¤µµÀ̸磬Àú¼ö·Î ³» À¯¼ÓÀº ½Ä»ýÀüÀÇ ´Ü¸éÆò±ÕÀ¯¼Ó¿¡ ºñÇÏ¿© ¾à 25% ${sim}$ 85% Á¤µµ·Î Áõ°¡ÇÏ¿´´Ù. È«¼öÅÍ ½Ä»ý¿¡ ÀÇÇÑ Àú¼ö·Î À¯¼Ó Áõ°¡·®Àº ½Ä»ý¹Ðµµ¿Í ºñ·ÊÇÏ°í ¼ö½Éºñ¿Í´Â ¹Ýºñ·ÊÇÑ´Ù. HEC -RAS ¹× RMA-2 ¸ðÇüÀ» ÀÌ¿ëÇÏ¿© »êÁ¤µÈ ½Ä»ý ±¸°£ÀÇ Á¶µµ°è¼ö ¹üÀ§´Â ´Ü´Ü¸éÀÇ °æ¿ì 0.055 ${sim}$ 0.14 À̸磬 º¹´Ü¸é¿¡¼­´Â 0.063 ${sim}$ 0.085 Á¤µµ·Î »êÁ¤µÇ¾ú´Ù.
An understanding of the hydraulic characteristics in the compound channel with vegetation is important in designing stream restorations or managing the floodplain. A laboratory flume of 16 m long and 0.8 m wide was used for analysis of the hydraulic characteristics in the single section channel and the compound channel with artificial vegetation. Slope of experimental channel is 0.5 %. Discharges are ranged from $0.2;m^3/s;to;$0.4;m^3/s$. The experiments were done by changing water depth ratio, vegetation density and vegetation location. When water depth ratio in the single section channel with vegetation increase up to 3.5, the results showed that the increment of water depth due to vegetation may be ignored in practice. The maximum increment of water depth was measured up to 6 % in the compound channel with vegetation and the range of velocities increment in the low flow channel was from 25 % to 85 % compared with section average velocities. As the vegetation densities increase and water depth ratios decrease, the velocity of the low flow channel increased. The range of roughness coefficients in the vegetated reaches were estimated from 0.055 to 0.14 in the single section channel and from 0.063 to 0.085 in the compound channel using HEC-RAS and RMA-2 model.
 
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¼ö¸®½ÇÇè;°³¼ö·Î;½Ä»ý;¼ö¸®Æ¯¼º;hydraulic experiment;open channel;vegetation;hydraulic characteristic;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.40, no.3, 2007³â, pp.265-276
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200727542971535)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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