| 天然河流床沙级配的计算 |
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| 引用本文： | 赵连军,谈广鸣,韦直林,江恩惠.天然河流床沙级配的计算[J].武汉大学学报(工学版),2005,38(2):25-29. |
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| 作者姓名： | 赵连军 谈广鸣 韦直林 江恩惠 |
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| 作者单位： | 1. 武汉大学水资源与水电工程科学国家重点实验室,湖北,武汉,430072
2. 黄河水利科学研究院,河南,郑州,450003 |
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| 摘 要： | 在回顾前人研究成果的基础上,分别针对细沙河床床沙与粗沙河床床沙不同的起动模式,通过分析处于起动临界状态时的泥沙受力情况,经理论推导分别建立了计算细沙河床床沙和粗沙河床床沙级配的计算公式.采用大量天然实测资料进行验证,表明所提出的计算公式能准确地计算出天然河道的床沙级配,因此具有重要的理论意义和实用价值.
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| 关 键 词： | 床沙级配 泥沙起动 水流紊动结构 |
| 文章编号： | 1671-8844(2005)02-025-05 |
| 修稿时间： | 2004年6月8日 |
Computation of bed-load gradation composition in natural river |
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| Zhao Lian-jun,TAN Guang-ming,WEI Zhi-lin,JIANG En-hui.Computation of bed-load gradation composition in natural river[J].Engineering Journal of Wuhan University,2005,38(2):25-29. |
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| Authors: | Zhao Lian-jun TAN Guang-ming WEI Zhi-lin JIANG En-hui |
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| Affiliation: | ZHAO Lian-jun~1,TAN Guang-ming~1,WEI Zhi-lin~1,JIANG En-hui~2 |
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| Abstract: | Sediment gradation composition in natural river is closely related to flow turbulent structure. Based on former study, according to different starting patterns of coarse sand and fine sand, this paper analyzes their sediment-stressing in starting critical status. And through theoretical derivation, the computational formulas of gradation of coarse sand and fine sand have been proposed. Finally, field data have been used to verify the formulas; and the result shows that the formulas can correctly compute bed-load gradation composition in natural river. |
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| Keywords: | bed-load gradation composition sediment starting flow turbulent structure |
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