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Çѱ¹¼öÀÚ¿øÇÐȸ / v.38, no.2, 2005³â, pp.143-153
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( An Experimental Study on Tip Velocity and Downstream Recirculation Zone of Single Groyne Conditions )
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ÃÖ±Ù µé¾î ÀÚ¿¬Çü ÇÏõ°ú ÇÏõ»ýÅÂ°è º¹¿ø¿¡ ´ëÇÑ °ü½ÉÀÌ Á¡ÁõÇϸ鼭 ¼ö¸®ÇÐÀû ±â´É ¿Ü¿¡, ´Ù¾çÇÑ »ýÅÂȯ°æÀ» Á¦°øÇϰí ÇÏ¾È ºÎ±ÙÀÇ °æ°üÀ» °³¼±ÇÏ´Â ±â´ÉÀ» °¡´Â ¼öÁ¦¿¡ ´ëÇÑ °ü½ÉÀÌ Ä¿Áö°í ÀÖ´Ù. ±×·¯³ª ÇöÀç ±¹³»¿¡´Â ¼öÁ¦¼³Ä¡¿¡ ´ëÇÑ ¼³°èÁöħÀÌ ÃæºÐÄ¡ ¾ÊÀ» »Ó ¸¸ ¾Æ´Ï¶ó ±¹³» ¼öÇàµÈ ¿¬±¸ ÀÚ·á°¡ ¸Å¿ì ºÎÁ·ÇÑ ½ÇÁ¤ÀÌ´Ù. ÀÌ¿¡ º» ¿¬±¸¿¡¼­´Â ¼öÁ¦ ¼³°èÀÎÀÚ ÇØ¼®À» À§ÇÑ ¼ö¸®¸ðÇü½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ½ÇÇèÁ¶°ÇÀº ¼öÁ¦¼±´Ü È帧º¯È­¿Í ¼öÁ¦ÇÏ·ùºÎ Àç¼øÈ¯¿µ¿ª¿¡ ´ëÇÑ °íÁ¤»ó½ÇÇèÀ¸·Î ¼öÁ¦±æÀÌ¿Í Åõ°úÀ²À» Á¶ÀýÇÏ¿© ¼öÇàÇÏ¿´´Ù. ÁÖ¿ä ºÐ¼®Àº ¼öÁ¦ ¼±´Ü¿¡¼­´Â Á߾ӺΠÀ¯¼ÓÁõ°¡¿Í ¼¼±¼ÀÇ ¿µÇâÀÎÀÚÀÎ À¯¼Ó°ú ÆíÇâ°¢À» ÃøÁ¤ÇÏ¿© ¼öÁ¦ ¼±´ÜÀ¯¼Óºñ¿Í ¸éÀûºñ¿¡ ´ëÇÑ ½ÇÇè½ÄÀ» Á¦¾ÈÇÏ¿´´Ù. ¶ÇÇÑ ¼öÁ¦ÇÏ·ùºÎ Àç¼øÈ¯ ¿µ¿ª¿¡¼­´Â ¼öÁ¦ ¼³Ä¡ÀÇ ÁÖ¿ä¿äÀÎÀÎ ¼öÁ¦°£°ÝÀÇ ±âÃÊ ÀڷḦ ÇØ¼®Çϱâ À§ÇØ È帧ºÐ¸® ±æÀÌ¿Í ÀԻ簢ÀÇ º¯È­¸¦ ºÐ¼®ÇÏ¿´À¸¸ç Åõ°úÀ²°ú ¼öÁ¦ ¼³Ä¡°¢¿¡ ´ëÇÑ ½ÇÇè½ÄÀ» Á¦¾ÈÇÏ¿´´Ù.
Recently, the concern of groynes that provide us with various ecological environment and improvement of scenary near river as well as hydraulic improvement has greatly increased for naturalized river and ecological river restoration. However there is no adequate design guidelines in Korea. Furthermore there is lack of research for installation of groynes in Korea. Thus, in this study, we have conducted hydraulic modeling test for kinds of groyne and changes of permeability and made a study of the analysis for installation factor of groyne. Experimental conditions were the fixed bed model for flow pattern of groyne tip and separation length about changes of groyne length and permeability. The Experiments were conducted to measure velocity and drift angle at groyne tip. The main study kas measured the groyne tip velocity for a factor of scour and drift angle for velocity increase at center of channel. We have suggested the equation about groyne tip velocity rate(tip velocity/ approach velocity) and area rate(groyne area/ flow area). And In recirculation zone of groyne downstream, To study the basic data of groyne about installation interval has analyzed the change of separation length and incidence angle. We have suggested the equation about separation length rate(separation length/ groyne length), changes of permeability and installation angle.
 
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¼öÁ¦;Àç¼øÈ¯¿µ¿ª;È帧ºÐ¸® ±æÀÌ;¼öÁ¦¼±´ÜÀ¯¼Ó;groyne;recirculation zone;separation length;tip velocity;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.38, no.2, 2005³â, pp.143-153
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200514714215207)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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