| 摘要: |
| 基于沙粒佛汝德数相似原理,首先推导出利用模型试验结果估算原型沙波河床上推移质输沙率的推算公式;然后塑造与原型较为一致的床面形态,利用模型试验对推算公式进行了验证。结果表明,在保证原型与模型的粒径比尺较大,且模型与原型床面形态一致的条件下,运用该方法推算沙波河床上的推移质输沙率时,可以取得较为满意的结果。 |
| 关键词: 沙粒佛汝德数相似原理 推移质输沙率 沙波河床 模型试验 |
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| 基金项目:陕西省教育厅科学研究计划项目（04JK230） |
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| Estimation of bed load transport rate based on grain Froude similarity considering the existence of sand waves |
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| Abstract: |
| It is very important for reservoir management to estimate the sedimentation amount deposited in a reservoir. In this sand waves of prototype paper, firstly, the formula for estimating the bed load transport rate in the bed of by model experiment based on the similarity of grain Froude number was inferred. Secondly, the bed forms similar to the prototype were built, and the formula was verified by using model experiment. Results showed when the ratio of grain diameter in the prototype and model was great enough, and the bed form in the model was similar to that in the prototype,a satisfactory result could be obtained by using the estimation formula to estimate the bed load transport rate of the sand wave bde. |
| Key words: grain Froude similarity bed load transport rate sand wave bed model experiment |
