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Çѱ¹¼öÀÚ¿øÇÐȸ / v.33, no.6, 2000³â, pp.711-723
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( Computation of Bed Load Transport in Rivers ) |
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| ÇöÀç »ç¿ëµÇ°í ÀÖ´Â ¼Ò·ù»ç·® »êÁ¤½ÄµéÀº Çü½ÄÀÇ ´Ù¾çÇÔ°ú °ü·Ãº¯¼öµéÀÇ ºÒÀÏÄ¡·Î °¢ °ø½ÄÀÇ Æ¯Â¡À» ÆÄ¾ÇÇϱâ Èûµé¸ç »ç¿ëµÈ °üÃøÀÚ·á°¡ ´Ù¸£±â ¶§¹®¿¡ »ó´ëÀûÀÎ ºñ±³°¡ ¾î·Æ´Ù. ÇÑÆí »êÁ¤½ÄÀÇ À¯µµ°úÁ¤¿¡¼ »ç¿ëµÇ´Â ±âº»ÀûÀÎ °¡Á¤µéÀÇ °³¼±¿©Áö°¡ ¸¹Àº °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. ÀÌ·¯ÇÑ ¹®Á¦Á¡µéÀ» ÇØ°áÇϱâ À§ÇÏ¿© ¼Ò·ù»ç·®°ú Á÷Á¢ÀûÀ¸·Î °ü·ÃµÈ ¿©·¯ ¹«Â÷¿ø¼öµéÀ» Á¦½ÃÇÏ°í ±×µé°£ÀÇ °ü°è½ÄÀ» µµÃâÇÏ¿´À¸¸ç °¡Àå ÀûÇÕÇÏ´Ù°í ÆÇ´ÜµÇ´Â ¹«Â÷¿ø¼ö¸¦ µµÀÔÇÏ¿© Çü½ÄÀÇ ÅëÀÏÀ» ±âÇÏ¿´´Ù. van RijnÀÌ Á¦½ÃÇÑ °ü°è½ÄÀ» º¸´Ù °£´ÜÇÑ Çü½ÄÀ¸·Î µµÃâÇÏ¿© »õ·Î¿î ¼Ò·ù»ç·® »êÁ¤½ÄÀ» °³¹ßÇÏ¿´´Ù. Brownlie(1981)°¡ ¼öÁý Á¤¸®ÇÑ °üÃøÀÚ·á¿Í °³¹ß½ÄÀ» ´ëºñÇÏ¿© °æÇè °è¼öÀÇ ÀûÇÕÇÑ ¼öÄ¡¸¦ µµÃâÇÏ¿´À¸¸ç ±¤¹üÀ§ÇÑ Á¶°Ç¿¡¼ À¯È¿Çϰí Á¤¹Ðµµ°¡ ³ôÀº Á¶Á¤½ÄÀ» °³¹ßÇÏ¿´´Ù. |
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| Existing equations of bed load transport have large variations in their forms and adopt different variables so that it is very difficult to understand the characteristics of each equation. Different sets of measurement data have been employed for the development of various equations, and the comparison between them is completely dependent on the choice of the data for the verification. Several equations seem to have some defects in their basic assumptions. Various non-dimensional physical numbers directly associated with the mechanism of bed load transport are related with each other, and one of them is chosen for the unification of the form. Good ideas introduced in a certain equation are employed for the refinement of other equations. Then optimum values of empirical parameters have been determined by using the data collected by Brownlie(1981) and a new bed load equation has been developed, which is considered widely valid and relatively very accurate.curate. |
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| ¼Ò·ù»ç;¼Ò·ù»ç·® ¹«Â÷¿ø¼ö;ÀӰ踶Âû·Â;°üÃøÀÚ·á;Brownlie ¼öÁýÀÚ·á;bed load;non-dimensional number of bed load;critical shear stress;measurement data;Brownlie's collected dat; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.33, no.6, 2000³â, pp.711-723
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011920730206)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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