| 坡面薄层径流最小侵蚀临界值及主要影响因子研究 |
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| 引用本文： | 赵晓光,吴发启,王健. 坡面薄层径流最小侵蚀临界值及主要影响因子研究[J]. 水土保持研究, 2000, 7(1): 30-32 |
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| 作者姓名： | 赵晓光 吴发启 王健 |
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| 作者单位： | 西北农林科技大学, 陕西 杨陵 712100 |
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| 摘 要： | 通过8组坡度、5种水深及5种糙率情况下坡面薄层径流流态变化特征的实验研究，得出薄层径流的临界雷诺数为1000，对应的径流属层流时，水深上限为3 mm，通过水深、糙率及坡度对雷诺数作用特征分析可知，雷诺数与水深、坡度的变化成正比，与糙率的变化成反比；水深的作用明显大于后两者，影响因子共同作用下，雷诺数的变化规律可用公式Re=2.331 H1.41n-0.973S0.486-288.17来描述。
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| 关 键 词： | 薄层径流 侵蚀 雷诺数 |
| 文章编号： | 1005-3409(2000)01-0030-03 |
| 修稿时间： | 2000-01-01 |
Study on the Critical Value of the Thin Runoff and Law of Action by the Major Factors |
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| ZHAO Xiao-guang,WU Fa-qi,WANG Jian. Study on the Critical Value of the Thin Runoff and Law of Action by the Major Factors[J]. Research of Soil and Water Conservation, 2000, 7(1): 30-32 |
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| Authors: | ZHAO Xiao-guang WU Fa-qi WANG Jian |
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| Affiliation: | Northwest Science and Technology University of Agriculture and Forestry Yangling Shaanxi 712100 |
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| Abstract: | Changes of the thin runoff flow in slopes depths and coarse degrees were discussed.The results showed that the critical value of Reynolds under 5° slope degree and 3 mm water depth when runoff flow was stratified.The value of Reynolds was directly proportional to water depths and slope degrees,but indireetly proportional to coarse degree.Effect of water degree on it largely exceeded others. A calculation formula of Reynolds value is as follows:Re=2.331 H1.41n-0.973S0.486-288.17. |
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| Keywords: | thin runoff flow erosion Reynolds value |
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