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Çѱ¹¼öÀÚ¿øÇÐȸ / v.24, no.2, 1991³â, pp.71-79
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û°èõ¿¡¼ÀÇ ÇÏõ À¯»ç ÃøÁ¤ ¹× ºÐ¼®(I) - ¼ö¸®·® ¹× À¯»ç·® -
( Field Measurement and Analysis of Fluvial Sediment in the Cheongmi-Stream(I) - Hydraulic and Sediment Characteristics ) |
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| ÇÑ ½ÃÇèÇÏõ¿¡¼ Æò±ÕÀ¯¼Ó, ¼ö¸é°æ»ç, Åë¼ö´Ü¸é, ¼ö¿Â µî ¼ö¸®·®°ú ºÎÀ¯»ç ³óµµ, ºÎÀ¯»ç ¹× ÇÏ»óµµÀÇ ÀÔ°æºÐÆ÷ µî À¯»ç·®À» ÃøÁ¤ÇÏ¿´´Ù. ÃøÁ¤ ´ë»óÇÏõÀº ³²ÇѰÀÇ Á¦1Áö·ùÀΠû¹ÌõÀ¸·Î, °æ±âµµ ÇÑÆò±³ ÁöÁ¡°ú ÀåÈ£¿øÀÇ ¿øºÎ±³ ÁöÁ¡À» ÅÃÇÏ¿´´Ù. û¹ÌõÀº ±× ÇÏ»óÀÌ ¿ÏÀüÈ÷ ¸ð·¡·Î ±¸¼ºµÈ ÇÏõÀ¸·Î ÀüÇüÀûÀÎ ÃæÀûÇÏõÀ¸·Î °£ÁֵȴÙ. º» ¿¬±¸¿¡¼ ÃøÁ¤µÈ ÀÚ·áÀÇ ÁÖ¿ä ºÐ¼®°á°ú´Â ´ÙÀ½°ú °°´Ù: 1)½ÃÇèÇÏõÀÇ °æ¿ì, È«¼ö½Ã¿¡¸¸ ½ÇÁúÀûÀÎ À¯»çÀ̵¿ÀÌ ÀÖ´Ù; 2)¼öÀ§-À¯·®°ü°è´Â ƯÈ÷ Àú¼ö½Ã¿¡ ÀÚÁÖ º¯ÇÑ´Ù; 3)À¯·®ÀÇ Áõ°¡¿¡ µû¶ó ÇÏõÀÇ ¸¶Âû ¿ª½Ã Áõ°¡ÇÑ´Ù; 4) Æò¼ö³ª Àú¼ö½Ã¿¡´Â ºÎÀ¯»çÁß¿¡ ÀÌÅ䳪 Á¡Åä°¡ Áö¹èÀûÀ̳ª, È«¼ö½Ã¿¡´Â ¸ð·¡°¡ Áö¹èÀûÀÌ´Ù; 5) À¯¼Ó¹× ºÎÀ¯»ç ³óµµÀÇ ¿¬Á÷ºÐÆ÷´Â °¢°¢ Prandt1-von KarmanÀÇ ´ë¼öºÐÆ÷½Ä°ú RouseÀÇ Áö¼öºÐÆ÷½ÄÀ¸·Î Ç¥½ÃµÉ ¼ö ÀÖ´Ù. ÀÌ»óÀÇ °á°úµéÀº û¹Ìõ¿¡¼ÀÇ ÃøÁ¤°á°ú¿¡ ÀÇÇÑ °ÍÀ̳ª, À̴ û¹Ìõ¿¡ ±¹ÇѵÇÁö ¾Ê°í ÇÏ»óÀÌ ¸ð·¡·Î ±¸¼ºµÈ ÃæÀûÇÏõÀÇ °æ¿ì ÀϹÝÀûÀ¸·Î Àû¿ëµÉ °ÍÀ¸·Î À¯ÃߵȴÙ. |
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| Some selected hydraulic characteristics including the average velocitv, geometry of the channel cross-section, and water temperature, and sediment-characteristics including suspended sediment concentration , and the size distributions of suspended and bed-sediments were collected at two measuring stations in the Cheongmi-Stream during a flood period. The river bed investigated for this study is composed completely of sands, and it can be considered a typical alluvial channel. The major results obtained from the analysis of the date collected are as follows: 1) Only during floods, a substantial sediment transport occurs in the river; 2) The stage-discharge relations are changed frequently, especially for low flows; 3) The friction in the flow increases with an increase in the flow discharge; 4) Slits and clays are dominant in suspended sediments during normal flows, while sands are dominant during floods; 5) The vertical distributions of the flow velocity and suspended sediment concentration can be described, respectively, by Prandt1-von Karman's log-law and Rouse's exponential law. It is judged that the above results are commonly adapted for other alluvial rivers, although they were obtained from a limited number of data collected from a specific river reach. |
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.24, no.2, 1991³â, pp.71-79
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199111920093581)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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