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Çѱ¹¼öÀÚ¿øÇÐȸ / v.43, no.10, 2010³â, pp.921-932
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¼öÄ¡¸ðÀǸ¦ ÀÌ¿ëÇÑ Áؼ³ÇÏõÀÇ ¿õµ¢ÀÌ ÀûÀÀ¿¡ °üÇÑ ¿¬±¸
( Numerical Modelling of the Adjustment Processes of Minning Pit in the Dredged Channels ) |
Àåâ·¡; ÃæÁÖ´ëÇб³ Åä¸ñ°øÇаú;
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º» ¿¬±¸´Â ÇÏõÀÇ °ñÀçäÃë ȤÀº ÇÏõÁؼ³·Î ÀÎÇÏ¿© ±³¶õµÈ ÇÏõÀÇ ÀûÀÀ°úÁ¤À» ÇϵµÀÇ Æò¸éº¯È¿¡ ÀûÇÕÇϵµ·Ï ÀϹÝÁÂÇ¥°è »ó¿¡¼ È帧 ¹× Çϻ󺯵¿À» ¸ðÀÇÇÒ ¼ö ÀÖ´Â 2Â÷¿ø ¼öÄ¡¸ðÇüÀ» ÀÌ¿ëÇÏ¿© ÆÄ¾ÇÇÏ¿´´Ù. ¼öÄ¡ÇØ¼® ±â¹ýÀ¸·Î´Â È帧ÀÇ ¿îµ¿·® ¹æÁ¤½Ä¿¡¼ ÀÌ·ùÇ×Àº CIP (Cubic Interpolated Pseudoparticle)¹ýÀ» Àû¿ëÇÏ¿´À¸¸ç, È®»êÇ×Àº Áß¾ÓÂ÷ºÐ¹ýÀ» Àû¿ëÇÏ¿´´Ù. ÇÏõÁؼ³ ȤÀº °ñÀçäÃë¿¡ ÀÇÇØ Çü¼ºµÈ ¿õµ¢ÀÌ´Â Ãʱ⿡ ¿õµ¢ÀÌ »ó·ù ÁöÁ¡¿¡¼ ±Þ°ÝÇÑ µÎºÎħ½ÄÀÌ ¹ß»ýÇÏ¿´´Ù. ½Ã°£ÀÌ Áõ°¡ÇÏ¸é¼ ¿õµ¢ÀÌ´Â »ó·ù¿¡¼ °ø±ÞµÇ´Â À¯»ç¿¡ ÀÇÇÏ¿© µÇ¸Þ¿öÁö°í, ÀÏÁ¤ÇÑ ¾È½Ä°¢À» À¯ÁöÇÏ¸é¼ °ÅÀÇ ±ÕÀÏÇÑ ¼Óµµ·Î À̵¿ÇÏ¿´´Ù. ¿õµ¢ÀÌ ÇÏ·ù¿¡¼´Â ÇÏ»óÀúÇϰ¡ Áö¼ÓµÇ°í ÀÖ´Ù. ¼öÄ¡¸ðÀÇ °á°ú´Â ÀÌ·¯ÇÑ °úÁ¤À» Àß ¸ðÀÇÇÏ¿´´Ù. ÇÏ»ó°æ»ç°¡ ±ÞÇÒ °æ¿ì¿¡, ¿õµ¢ÀÌÀÇ º¯È¿¡ ´ëÇÏ¿© µÇ¸Þ¿öÁö´Â ½Ã°£ÀÌ Âª°í, ¿õµ¢ÀÌÀÇ À̵¿¼Óµµ°¡ ºü¸¥ °ÍÀ» º¸¿©ÁÖ°í ÀÖÀ¸¸ç, ¼öÄ¡¸ðÀÇ °á°ú´Â ½Ç³»½ÇÇè °á°ú¿¡ Àß ÀÏÄ¡ÇÏ¿´´Ù. |
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In this study, the adjustment processes of the disturbed channels by sand or gravel mining were investigated by a two dimensional numerical model in the generalized coordinate system. As a numerical scheme, the CIP (cubic interpolated pseudoparticle method) method was used to calculate the advection term in the flow field and central difference method was used to the diffusion term in it. The pit of the channel was partially filled with sediment at the toe of the pit upstream. As time increased, the headcut erosion upstream in the pit was decreased due to the sediment inflow. The almost inflow sediment upstream was trapped into the pit and the sediment deposit wedge migrated downstream in the pit with the steep submerged angle of repose. The numerical model was reproduced well the evolution processes of the channel. The mining pit migrated with speed as the channel was steep, and the numerical results were in overall agreement with the experimental results. |
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Ű¿öµå |
¼öÄ¡¸ðÀÇ;¿õµ¢ÀÌ;Çϻ󺯵¿;ÇϵµÀÇ ÀûÀÀ°úÁ¤;numerical modelling;sediment mining pit;bed change;adjustment processes of the channels; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.43, no.10, 2010³â, pp.921-932
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201032654094307)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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