| 糙率对截流难度的影响 |
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| 引用本文： | 周玉香,赵新来,季新民.糙率对截流难度的影响[J].中国农村水利水电,2003(12):71-72. |
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| 作者姓名： | 周玉香 赵新来 季新民 |
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| 作者单位： | 1. 山东大学土建与水利学院,山东,济南,250061
2. 山东省水利厅,250014 |
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| 摘 要： | 在截流工程中，加糙可以使河床底流速降低，其降低幅度与河床相对粗糙度有关，河床相对粗糙度越大，河床底流速降低值越大，反之，则降低值减小；底流速的降低，可以有效地减小舌状堆积体长度，减少抛投料和缩短截流时间，从而降低截流难度。
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| 关 键 词： | 河床糙率 相对粗糙度 截流工程 水面线 截流流量 |
| 文章编号： | 1007-2284(2003)12-0071-02 |
| 修稿时间： | 2003年5月19日 |
Influence of Roughness on the Difficulties of River Closure |
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| Zhou Yu-xiang ,Zhao Xin-lai ,Ji Xin-min.Influence of Roughness on the Difficulties of River Closure[J].China Rural Water and Hydropower,2003(12):71-72. |
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| Authors: | Zhou Yu-xiang Zhao Xin-lai Ji Xin-min |
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| Institution: | Zhou Yu-xiang 1,Zhao Xin-lai 1,Ji Xin-min 2 |
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| Abstract: | In the process of river closure, increase of roughness of riverbed can reduce the flow speed of under-set. The range of reduce is related to the relative roughness of riverbed: The greater the roughness, the greater the range of flow speed decrease is; whereas the smaller the roughness, the smaller the range of the flow speed decrease is. Moreover, decrease of under-set flow speed can reduce the length of the tongue-shapeed deposit, lessen the volume of cast, and decrease the difficulties of river closure. |
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| Keywords: | riverbed roughness relative roughness river closure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
