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Çѱ¹¼öÀÚ¿øÇÐȸ / v.44, no.12, 2011³â, pp.975-990
¼öÄ¡¸ðÇüÀ» ÀÌ¿ëÇÑ Çϻ󺯵¿ ½Ã°ø°£ Æò°¡ ±â¹ý °³¹ß ¿¬±¸
( A Study on Development of Assessment Model for Spatio-Temporal Changes in River Bed Using Numerical Models )
±èö¹®;ÀÌÁ¤ÁÖ;ÃÖ¼ö¿ø;¾È¿ø½Ä; ¼ö¿ø´ëÇб³ Åä¸ñ°øÇаú;Çѱ¹¼öÀÚ¿ø°ø»ç Á¶»ç±âȹó;¼ö¿ø´ëÇб³ Åä¸ñ°øÇаú;¼ö¿ø´ëÇб³ Åä¸ñ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â ÇÏ»óÀÇ ½Ã°ø°£Àûº¯µ¿¿¡ ´ëÇÑ Æò°¡±â¹ýÀ» °³¹ßÇϰíÀÚ, 1Â÷¿øHEC-RAS ¸ðµ¨°ú 2Â÷¿øCCHE2D ¸ðµ¨À» ÀÌ¿ëÇØ Çϻ󺯵¿À» Æò°¡ÇÏ¿´´Ù. ½ÇÁ¦ÇÏõÀÇ Àå±â°£ Çϻ󺯵¿ÀÇ °á°ú¸¦ ÇØ¼®ÇÔ¿¡ À־ º¯µ¿ Ư¼ºÀ» ÀϰüÀûÀÎ ±âÁØÀ¸·Î Æò°¡Çϰí, º¯È­·®À» Á÷°üÀûÀ¸·Î ¾Ë ¼öÀÖ´Â Æò°¡¹æ¹ýÀ»°³¹ßÇϰíÀÚÀ¯»ç´Ü¸é´©°¡°î¼±, À¯»ç´Ü¸é¸ð¸àÆ®, À¯»çÈ®·üºÐÆ÷ÇÔ¼öÀÇ ¼¼ °¡Áö Æò°¡ ¹æ¹ýÀ» °³¹ßÇÏ¿´´Ù. º» ¿¬±¸¸¦ ¼öÇàÇÑ °á°ú À¯»ç´Ü¸é ´©°¡°î¼±¹ýÀº ´Ü¸éÀÇ ÃÑ·®Àû °³³äÀÇ Ä§½Ä ¶Ç´Â ÅðÀû ¿©ºÎ¸¦ ÆÇº°Çϴµ¥ È¿°úÀûÀ̸ç, À¯»ç´Ü¸é ¸ð¸àÆ®¹ýÀº ÇÏõÀÇ ÁÂ, ¿ì¾ÈÀ» ³ª´©´Â ±âÁؼ±À» Áß½ÉÀ¸·Î ÁÂ, ¿ì¾ÈÀÇ ÅðÀû ¶Ç´Â ħ½Ä Á¤µµ¸¦ ÇϳªÀÇ Ã´µµ·Î Á¦½ÃÇÏ´Â °ÍÀÌ °¡´ÉÇÏ¿´´Ù. ÀÌ·¯ÇÑ ¹æ¹ýÀº ÇÏõÀÇ °î·ü µî°ú ¿¬°èÇÑ Çϻ󺯵¿ ¿¹Ãø¿¡ À־ ÇϳªÀÇ ¿µÇâÁöÇ¥·Î Ȱ¿ëÇÒ ¼ö ÀÖÀ» °ÍÀÌ´Ù. À¯»çÈ®·üºÐÆ÷ÇÔ¼öÀÇ °æ¿ì ÇÏõ ´Ü¸é ±¸°£¿¡ ´ëÇÑ ½Ã°£ÀÇ º¯È­¿¡ µû¸¥ º¯µ¿ ¸ðÀÇ °á°ú¸¦ Á÷°üÀûÀ¸·Î µµ½ÃÇϰí, ÇØ´ç ±¸°£ÀÇ ½Ã°ø°£Àû º¯µ¿ Ư¼ºÀ» Åë°èÀû Ư¼ºÄ¡ÀÎ Æò±Õ°ú ½Å·Ú ±¸°£À» ÅëÇØ Á¤·®È­ ÇÒ ¼ö ÀÖ¾ú´Ù.
In this study, to develop an assessment method for spatio-temporal riverbed changes, a 1-dimensional model (HEC-RAS) and a 2-dimensional model (CCHE2D) were built and applied. As for the analysis of a riverbed's long-term change in a real stream, three new assessment methods were developed, which are called the "Sediment section cumulative curve", "Sediment section moment", and "Sediment probability distribution function." These methods were used to assess the characteristics of riverbed changes using a consistent valuation standard and to understand changes in quantities intuitively. From the results of this study, sediment characteristics of cross sections can be detected effectively by applying the "Sediment section cumulative curve" method to determine whether there is any sedimentation or erosion in total emission. The amount of sedimentation or erosion occurring in the right or left banks, which divided by center column, could be presented as one criterion by applying the "Sediment section moment" method. This approach could be utilized as an indicator for sediment predictions. Spatio-temporal sediment variables can be presented quantitatively by determining the mean and uncertain boundaries through the "Sediment probability distribution function", and finally, the results can be illustrated for each cross section to provide intuitive recognition.
 
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Çϻ󺯵¿Æò°¡;À¯»ç´Ü¸é´©°¡°î¼±;À¯»ç´Ü¸é¸ð¸àÆ®;À¯»çÈ®·üºÐÆ÷ÇÔ¼ö;assessment riverbed change;sediment section cumulative curve;sediment section moment;sediment probability distribution function;HEC-RAS;CCHE2D;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.44, no.12, 2011³â, pp.975-990
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201105462034395)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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