| 金中武,卢金友,姚仕明.长江上游推移质泥沙输沙率公式的检验[J].水利学报,2009,40(11): |
| 长江上游推移质泥沙输沙率公式的检验 |
| Verification on formulas of bed load sediment transport rate at the upstream of Yangtze River |
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| DOI： |
| 中文关键词: 长江上游 推移质输沙率 公式检验 |
| 英文关键词: upstream of Yangtze River bed load sediment transport rate formulae verification |
| 基金项目: |
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| 摘要点击次数: 3588 |
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| 中文摘要: |
| 对现有推移质输沙率8个代表性计算公式，采取分散度比较法，利用长江上游8个测站(点)共计1290组实测资料对其进行检验，以探讨其对长江上游输沙律的适用性。分析发现：各公式的计算结果非常分散，其中Engelund Hansen公式精度相对最高，Yalin公式次之；若计算水流强度和输沙强度大的河流(如乌江、虎跳峡上峡口)时，Parker公式计算精度较高。各家公式并不适用于受下游峡谷洪水期雍水影响的河段(如奉节河段)。 |
| 英文摘要: |
| Based on the analysis on 1290 sets of field observation data in 8 sites at the upstream of Yangtze River, 8 formulae for bed load sediment transport rate were verified by using dispersion degree method. It is found that a wide diversity of calculated results is obtained by different formulae. In general, Engelund Hansens formula has the relatively highest precision, Yalins formula follows next. For the rivers of high flow intensity and transport intensity, Parker formula has relatively high accuracy. All these formulae are not suitable for the backwater reach of canyon. |
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