1) sediment discharge method
输沙率法
1.
The cross-section and sediment discharge methods are the two methods to quantitatively calculate the river sedimentation.
断面法和输沙率法是计算河道冲淤变化量广泛采用的两种方法。
2) 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。
3) 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。
4) 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。
5) suspended sediment discharge
输沙率
1.
Along the two analytical lines of the error propagation and the empirical relation, this paper obtains some achievements in researching the uncertainty of the relation between discharge and suspended sediment discharge, and also makes statistical test of reliability and consistency to them.
从误差传播及经验关系分析两条途径出发，分别获得了流量输沙率关系不确定度。
6) sand transport rate
输沙率
1.
Through field observation of blown-sand movement at semi-arid sandy region in spring,it studied the change of sand transport rate and blown-sand structure at the height of 0～60 cm with increasing field length on field surface after moldboard plowing,harrowing and milling respectively.
通过对春季半干旱沙区农田风沙活动的观测,本文对犁耕、耙磨磨平两种处理下近地表0~60 cm内输沙率和风沙流结构随田块长度的变化规律进行了研究。
2.
Through the observation of wind speed and sand flow in different positions of shifting sand dune along the bank of the Batuwan Reservoir,sand transport rate on the surface of shifting dune was calculated and empirical formula of sand transport rate was derived.
本文通过对内蒙古乌审旗南部巴图湾水库岸边流动沙丘不同部位风速与风沙流的同步观测,计算出库岸流动沙丘表面的平均输沙率。
3.
To analyze the relations between the sand transport rate and the forcing wind,a high sampling frequency is necessary for the measurement of the wind velocity and the sand transport rate.
围绕风沙两相流的测量,归纳了过去几十年来在风沙动力学研究中所使用的风速测量技术和输沙率测量装置。
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