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Çѱ¹¼öÀÚ¿øÇÐȸ / v.42, no.2, 2009³â, pp.141-148
ÇÏõ Çù¼ÒºÎ¿¡¼­ ÇÏ»ó À̵¿¼º°ú ÇüÅ¿ÍÀÇ »ó°ü¼º¿¡ °üÇÑ Çϵµ¼ö¸®ÇÐÀû Æò°¡
( Hydraulic Assessment about Correlation of Fluvial Movement and River Bed Form on the Narrow Pass of Channel )
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Each river in each country has peculiar channel characteristics at every section. Korea consists of mountains at the rate of 70%. Due to this, the sections that display unique channel form are scattered. One of the typical features is the narrow pass of channel section that presents in the process of the generation of alluvial channel and deformation channel. Around as this narrow pass of channel, it often comes to be regular flood disaster section. Regardless of this situation, investigations and plans that reflect channel characteristics at the narrow pass of channel have been wholly wanting until now. In accordance with this, we have investigated and analysed hydraulic significance and channel form of the narrow pass of channel in Seonsan in this study. The study has found real minute classification of sediment phenomenon at river bed of low flow channel on investigation section which is sand-bed river, but it was vaguely difficult to conclude that classification of sediment arises from explicit natural force. We were able to assume that the phenomenon comes from gentle bed slope, supply of river bed materials which is nearly uniformity. However, classification of sediment would come from collecting an aggregate rather than natural force. And we found that compound cross section conversion has been developing dramatically with channel form of movable bed section referring to movement which was active before at drainage district of the narrow pass of channel. With this, we could find the phenomenon that river width of low flow channel diminished largely. This kind of situation implies that it may cause compound section weighting, flood dimension decreasing, revetment at low flow channel or the local scour at bottom of levee when extraordinary flood occurs.
 
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ÇÏõ Çù¼ÒºÎ;ÇϵµÆ¯¼º;³«µ¿°­;¼±»êÁö±¸;¸ð·¡ÇÏõ;Çϻ󺯵¿;À̵¿»ó;the narrow of channel;classifiction of sediment;channel characteristics;channel form;Nakdong river;Seonsan;sand-bed river;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.42, no.2, 2009³â, pp.141-148
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200906939466399)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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