| 水流流速与泥沙起动概率关系研究 |
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| 引用本文： | 王智娟,刘兴年.水流流速与泥沙起动概率关系研究[J].东北水利水电,2004,22(6):1-2,5. |
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| 作者姓名： | 王智娟 刘兴年 |
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| 作者单位： | 四川大学高速水力学国家重点实验室,四川,成都,610065;四川大学高速水力学国家重点实验室,四川,成都,610065 |
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| 摘 要： | 通过对泥沙颗粒在水流中的受力情况的分析，推导出泥沙处于临界起动状态时的近底水流流速。运用概率论的思想，建立其与泥沙起动概率的关系，并根据指数垂线平均流速公式将近底流速转变为容易测量的垂线平均流速，使得泥沙的起动概率可直接通过测量水流速度来确定，为泥沙起动的概率研究提供了一个很好的工具。
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| 关 键 词： | 平均流速 泥沙 起动概率 起动流速 |
| 文章编号： | 1002-0624(2004)06-0001-02 |
Study on relation between flow velocity and silt competent probability |
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| WANG Zhi-juan,LIU Xing-nian.Study on relation between flow velocity and silt competent probability[J].Water Resources & Hydropower of Northeast China,2004,22(6):1-2,5. |
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| Authors: | WANG Zhi-juan LIU Xing-nian |
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| Abstract: | The flow velocity near the base under critical tractive condition of silt is got through the analysis of silt grain stressing in the flow. The relationship between the mean velocity in vertical and the silt tractive probability is set up based on the probability, the flow velocity near the base is transformed into the mean velocity in vertical that is easy to measure based on the formula of index mean velocity in vertical. The tractive probability is made to divectively fix through measuring the flow velocity, a good tool is provided for study of silt tractive probability. |
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| Keywords: | mean velocity tractive probability tractive velocity |
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