2) sediment transport equation
输沙公式
1.
The precision of the sediment transport equations is mostly determined by the selection of flow intensity parameter.
本文在对以往各种水流强度指标分析的基础上,提出了统一的水流强度指标形式,并由此推导出一般形式的输沙强度计算公式,该公式可概括现有的有关输沙公式。
3) formula for bed load discharge
推移质输沙率公式
1.
Comparison of computation formula for bed load discharge and its standardization;
对典型推移质输沙率公式进行了分类,并提出了推移质输沙率公式标准化的途径,同时对已有的一些计算公式进行了比较和评价,推荐了Yang公式等几个公式,并对今后这一问题研究进行了展望。
4) sediment transport rate
输沙率
1.
Formula for bedload sediment transport rate based on energy balance relationship within bed-surface layer;
基于床面层能量平衡关系的推移质输沙率计算式
2.
Some formulas now insue cannot correctly predict sediment transport rate at Yichang Station of Yangtze River.
在此基础上进而建立了适合宜昌站沙质推移质输沙率公式,并用宜昌站1975年沙质推移质资料对公式进行验证,按公式计算的起动流速和输沙率与实测值比较,获得满意结果。
3.
The results show that sediment transport rate is smaller with greater sediment diameter when the dimensionless sediment diameter is below 500, and sediment transport rate is almost unvaried with varied sediment diameter when the dimensionless sediment diameter is above 500.
根据近1000组推移质输沙试验资料,用多元回归的方法就泥沙粒径对推移质输沙率影响的问题进行了研究。
5) sediment discharge
输沙率
1.
Wavelet characteristics of time series for annual sediment discharge of Longchuang River
龙川江年输沙率时间序列的小波特征
2.
The software system are under the Windows9x/2000/xp which can calculate the measure of discharge,sediment discharge and print the table of results.
软件系统运行于Windows9x/2000/xp环境下,能完成流量、输沙率测验中的数据采集计算和成果打印功能。
3.
The changing laws of composing thegravel riverbed surface, the bedload graduation of gravel, the pattern characteristics ofgravel and its sediment discharge were obtained.
在收集大量卵石野外实测资料的基础上，主要针对长江上游的川江及其支流和三峡河段进行整理与分析，得到了卵石河床的床面组成、卵石推移质级配、卵石形态特征及其输沙率的变化规律。
6) transport rate
输沙率
1.
It is concluded that the critical velocity could be calculated by Sharmov formula and the percentage of immobile particles of the bed should be considered for calculating the transport rate.
以都江堰二王庙水文站9年实测的卵石推移质输沙率资料和对应的水力参数为基础,选用6个有代表性的公式进行了分析计算和对比。
2.
Based on the theoretical analysis together with experiment in laboratory flume and physical model,an experiment about incipient motion and transport rate of the bedload was conducted in laboratory flume according to the bedload characteristics and its motion characteristics of the reach from Qingyuan to Hekou of Beijiang River.
根据起动试验结果,得出了反映颗粒的隐蔽和暴露作用的隐暴系数表达式;根据输移试验,并通过与其它公式进行比较,得到适应于该河段的推移质输沙率公式。
3.
On the basis of mechanism of sediment exchange,some improvements in relation to the calculation method for riverbed deformation are performed,including modification of dispersion equation of suspended load under the condition of erosion;definition of carrying capacity of non uniform sediment;definition of efficient transport rate of bed load as well as that of time step and space step.
改进的内容包括 :冲刷条件下悬移质扩散方程的修正 ;非均匀沙水流挟沙能力的确定 ;推移质有效输沙率的确定以及时间和空间计算步长的确定原则等。
补充资料：输沙率
输沙率
sediment transport concentration
Shushal位输沙率(sediment transport eoneentra-tion)单位时间内由河道水流输移通过某断面的泥沙量。河流的总输沙率包括推移质和悬移质两部分。推移质输沙率与水深和流速的关系密切，故输沙率沿河宽的变化较大，所以许多推移质输沙率算式是指单位宽度内在单位时段中的输沙量。而悬移质输沙率沿河宽的变化相对较小，常以悬移质挟沙力表示.再与流量联系起来，即可求得单位时间内的悬移质输沙量。输沙率随水流泥沙条件而变化。在河床有单纯的冲刷或淤积情况时，河道各断面的输沙率是不同的。在河段处于冲淤平衡时，输沙率的计算见水流挟沙力。 (周耀庭)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条