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Çѱ¹¼öÀÚ¿øÇÐȸ / v.45, no.2, 2012³â, pp.217-227
Àú¼öÁö Åð¹è»ç ¸ðÀǸ¦ À§ÇÑ ÁØÁ¤·ù¸ðÇü
( A Quasi-Steady Model for Sedimentation and Flushing of Reservoirs )
ÃÖ¼º¿í;ÃÖ¼º¿í; ¿¬¼¼´ëÇб³ Åä¸ñȯ°æ°øÇаú;¿¬¼¼´ëÇб³ ´ëÇпø Åä¸ñȯ°æ°øÇаú;
 
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º» ³í¹®¿¡¼­´Â Àú¼öÁö Åð»ç ¹× ¹è»çÇö»óÀ» ¸ðÀÇÇϱâ À§ÇÑ ÁØÁ¤·ù ¸ðÇüÀ» Á¦½ÃÇÏ¿´´Ù. ÁØÁ¤·ù ¸ðÇüÀº ÇÏ»óÀº ½Ã°£¿¡ µû¶ó º¯ÇÏÁö¸¸ À¯µ¿Àº Á¤»ó·ù¶ó´Â °¡Á¤¿¡ ±âÃÊÇÑ´Ù. À̰ÍÀº À¯µ¿¿¡ ºñÇØ ¸Å¿ì Àå±â°£¿¡ °ÉÃÄ ÇϵµÇüŰ¡ º¯Çϱ⠶§¹®¿¡ Ÿ´çÇÏ´Ù. °³¹ßµÈ ¸ðÇüÀ» Àú¼öÁö Åð»ç¿¡ °üÇÑ ½Ç³»½ÇÇè¿¡ Àû¿ëÇÏ¿´´Ù. ¼öÄ¡°è»êÀ» ÅëÇÏ¿© »ó·ùÃø¿¡¼­ °ø±ÞµÇ´Â À¯»ç·®¿¡ µû¶ó ÇϵµÀÇ ¼ö½É ¹× ÇÏ»ó°æ»ç°¡ Á¶Á¤µÇ´Â °ÍÀ» º¸¿´´Ù. ¼öÄ¡¸ðÀÇ¿¡ ÀÇÇÑ ¼öÀ§¿Í ÇÏ»ó°í°¡ ½ÇÇè°á°ú¿Í Àß ÀÏÄ¡ÇÏ´Â °ÍÀ» È®ÀÎÇÏ¿´´Ù. ¶ÇÇÑ, ¸ðÇüÀ» Àú¼öÁö ¹è»ç Çö»ó¿¡ °üÇÑ ¼±Çà ½ÇÇè Á¶°Ç¿¡ Àû¿ëÇÏ¿´´Ù. ÀÌ °æ¿ì¿¡´Â ¹è»ç¸¦ ÃËÁø½Ã۱â À§ÇØ ½ÇÇè¿¡¼­ ºÎÁ¤·ù¸¦ ¹ß»ý½ÃÄױ⠶§¹®¿¡ ÁØÁ¤·ù ¸ðÇü¿¡ ÀÇÇÑ ¸ðÀǰá°ú°¡ °üÃøÀÚ·á¿Í Àß ÀÏÄ¡ÇÏÁö ¾Ê´Â °ÍÀ» È®ÀÎÇÏ¿´´Ù. ¸¶Áö¸·À¸·Î, À¯»ç°ø±Þ¿¡ µû¸¥ ÆòÇü ¼ö½É°ú ÇÏ»ó°æ»ç¿¡ °üÇÑ °ø½ÄÀ» Á¦½ÃÇÏ¿´À¸¸ç ¼öÄ¡½ÇÇèÀ» ÅëÇÏ¿© À̸¦ °ËÁõÇÏ¿´´Ù.
This paper presents a quasi-steady model for numerical simulations of reservoir sedimentation and reservoir flushing. The quasi-steady model is based on the assumption that the flow is steady with time-dependent stream morphology change. This is reasonable because stream morphology changes over a long period, while the flow changes rapidly. The proposed model is first applied to two laboratory experiments for reservoir sedimentation. The channel is shown to be adjusted to new sediment supply at the upstream by changing both the flow depth and slope. Simulated water surface and bed profiles compare favorably to measured data. The model is also applied to reservoir flushing. Good agreement between simulated and measured data is not obtained due to time variation of outflow generated to facilitate the flushing in the experiment. Finally, relationships for equilibrium flow depth and bed slope are proposed and tested through numerical experiments.
 
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ÁØÁ¤·ù ¸ðÇü;Àú¼öÁö Åð»ç;¹è»ç;À¯»çÀ̵¿;ÆòÇü¼ö½É;ÆòÇüÇÏ»ó°æ»ç;quasi-steady model;reservoir sedimentation;reservoir flushing;sediment transport;equilibrium flow depth;equilibrium bed slope;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.45, no.2, 2012³â, pp.217-227
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201208636392988)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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ȸ»ç¼Ò°³ ±¤°í¾È³» ÀÌ¿ë¾à°ü °³ÀÎÁ¤º¸Ãë±Þ¹æÄ§ Ã¥ÀÓÀÇ ÇѰè¿Í ¹ýÀû°íÁö À̸ÞÀÏÁÖ¼Ò ¹«´Ü¼öÁý °ÅºÎ °í°´¼¾ÅÍ
   

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