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Çѱ¹¼öÀÚ¿øÇÐȸ / v.26, no.3, 1993³â, pp.63-74
°ü°³¿ë Àú¼öÁöÀÇ Åð»ç·®°ú Æ÷ÂøÈ¿À²ÀÇ ÃßÁ¤
( Estimating Sediment Deposits and Trap Efficiencies for Irrigation Reservoirs )
±èÁøÅÃ;¹Ú½Â¿ì; ¼­¿ï´ëÇб³ ´ëÇпø ³ó°øÇаú;¼­¿ï´ëÇб³ ³ó¾÷»ý¸í°úÇдëÇÐ;
 
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°ü°³¿ë Àú¼öÁöÀÇ Åð»ç·® ÃßÁ¤À» À§ÇØ ÃÑ À¯½Ç·®-À¯»ç¿î¼Ûºñ¹ýÀ» Àû¿ëÇÏ°í ´ë»ó Àú¼öÁöÀÇ À¯»ç Æ÷ÂøÈ¿À²À» ÃßÁ¤ÇÏ´Â °ÍÀÌ º» ³í¹®ÀÇ ¸ñÀûÀÌ´Ù. °ü°³¿ë Àú¼öÁö 20°³¸¦ ¼±Á¤ÇÏ¿© ½ÇÃøÀڷḦ ±¸ÇÏ°í µµ¾çÀ¯½Ç·®½Ä(Universal Soil Loss Equation, USLE)¸¦ ÀÌ¿ëÇÏ¿© Àú¼öÁö À¯¿ªÀÇ ¿¬Æò±Õ Åä¾çÀ¯½Ç·®À» »êÁ¤ÇÏ¿´´Ù. ÃÑÅä¾çÀ¯½Ç·®Àº °æ»çÁö Åä¾çÀ¯½Ç·®°ú Çϵµ À¯½Ç·®À¸·ÎºÎÅÍ Á¤ÀǵǸç À¯»ç¿î¼Ûºñ¸¦ Àû¿ëÇÏ¿© Àú¼öÁö À¯ÀÔÀ¯»ç·®À» Á¤ÇÏ¿´´Ù. Àú¼öÁö Æ÷ÂøÈ¿À²À» Àû¿ëÇÑ ÃßÁ¤ Àú¼öÁö Åð»ç·®°ú ƯÁ¤ Åð»ç·®Àڷ㸦 ºñ±³ÇÑ °á°ú ´ëü·Î ¾çÈ£ÇÑ °á°ú¸¦ ³ªÅ¸³»¾ú´Ù. Àú¼öÁö Æ÷ÂøÈ¿À²Àº Åð»ç·®ÀÇ À¯ÀÔÅä»ç¿¡ ´ëÇÑ ºñ·Î¼­ º» ¿¬±¸ÀÇ °á°ú°¡ Brune°ª°ú ºñ±³ÇÏ¿© 20% Á¤µµÀÇ ¿ÀÂ÷¸¦ º¸¿´À¸¸ç À̸¦ °³¼±ÇÑ °ü°³¿ë Àú¼öÁö Æ÷ÂøÈ¿À² ÃßÁ¤½ÄÀ» Á¦¾ÈÇÏ¿´´Ù.
The objectives of this paper were to apply the gross erosion and sediment delivery ration method for estimating sediment deposits at selected reservoirs of various sizes, and to define their trap efficiencies. Twenty reservoirs that have sediment survey data were selected and the annual average soil losses from subareas within each watershed were estimated using the Universal Soil Loss Equation (USLE). The gross erosion was defined fro the soil losses and estimated channel erosion. By applying the sediment delivery ratios that were defined from an empirical relationship with watershed areas, net incoming sediment yields at reservoirs were defined. Trap efficiencies were applied, sediment deposits estimated, and compared to the surveyed data. The results were in general agreement with the data. Trap efficiencies were also defined from the ratios of sediment deposits to incoming sediment yields. They were within 20% differences from Brune curve, which indicates that Brune curve may be applied for irrigation reservoirs. And an empirical relationship was proposed, that appeared more reliable for estimating trap efficiencies for typical irrigation reservoirs.
 
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.26, no.3, 1993³â, pp.63-74
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199311920094546)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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