| 垂线输沙率计算方法的理论分析 |
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| 引用本文： | 刘伟林,韩念民,郭爱军.垂线输沙率计算方法的理论分析[J].长江工程职业技术学院学报,2011,28(2):12-16. |
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| 作者姓名： | 刘伟林 韩念民 郭爱军 |
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| 作者单位： | 汉江水文水资源勘测局,湖北 丹江口,442700 |
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| 摘 要： | 由垂线含沙量分布公式与流速指数分布公式的乘积得到垂线输沙率分布公式,据此对12种垂线平均输沙率计算方法进行了分析比较,并提出了改进意见。建议用辛普生九点法与高斯—勒让德四点法作为计算垂线平均输沙率近似真值的方法,其中后者不仅工作量小,精度高,还避免了施测底速底沙的难题。
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| 关 键 词： | 垂线输沙率 计算方法 误差 |
Theoretical Analysis on Calculation Method of Vertical Sediment Discharge |
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| LIU Wei-lin,HAN Lian-min,GUO Ai-jun.Theoretical Analysis on Calculation Method of Vertical Sediment Discharge[J].Journal of Changjiang Engineering Vocational College,2011,28(2):12-16. |
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| Authors: | LIU Wei-lin HAN Lian-min GUO Ai-jun |
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| Institution: | (Hanjiang Survey Bureau of Hydrology and Water Resources,Danjangkou 442700,China) |
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| Abstract: | Vertical sediment transport rate distribution formula is got by using vertical sediment discharge distribution formula multiplied by flow rate exponential formula and accordingly calculation methods of 12 vertical average sediment transport rates are compared and analyzed.Ways for improvement have been suggested.It is proposed that Simpson nine-point o’clock and Gaussian -Legendre four -point methods should be used,with the latter not only small in workload,but also high in precision and the problem of measuring bottom speed and sediment can be bypassed. |
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| Keywords: | vertical sediment discharge calculation method error |
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