对立波作用下底沙起动流速和泥沙颗粒沉降速度作了探讨。
Apart from this, it discusses the starting current velocity of bottom sediment affected with vertical waves as well as the settling velocity of silt particles.
试验表明：冰盖下泥沙起动流速与冰盖及槽底糙率的相对比值有关。
The experiment results show that the threshold velocity is affected by the ratio of roughness coefficient of ice cover and bed.
根据现有成果，直接导出了起动切应力、起动流速与起动概率之间的关系。
Based on some previous results, the relationships between critical shear stress. critical velocity and incipient probability have been derived.
首先指出所谓宽级配泥沙，包括卵石等的起动流速必须按非均匀沙来研究。
At first, it is pointed out that in the study of incipient velocities of sediment, with a wide grading range including pebbles, the sediment should be regarded as one of nonuniform.
颗粒形貌对模型沙的水下休止角，起动流速、堆积密度等性能有显著影响。
The shape of model sand particle play an important role in submarine rest angle, starting speed, bulk specific weight and some other physical characters.
模拟结果表明，细沟扩宽过程对坡度和坡面表土临界起动流速的变化十分敏感。
Simulation result also indicates that the rill width is affected both by slope gradient and critical detachment velocity of surface soil on the hill slope.
到目前为止一百多年来，所提出的无粘性颗粒的起动流速公式已在100个左右。
Up to now, there are about 100 non-viscosity initial velocity formulas which have been put forward.
最后把本文推进波起动流速公式与前人振荡波或推进波泥沙起动流速公式进行了比较。
Finally comparison was made between the present critical velocity formula under progressing waves and former experimental or semi-experimental formulas.
实验结果表明，同一粒径组的非粘性花岗岩风化砂粒随底坡坡度的增加其起动流速变小；
Test results show:for the same grain size groups the flow velocity relating incipient motion of these granite sand grains decreases as the bed slope increases;
天然河流大多属于非均匀流，但起动拖曳力公式和起动流速公式都是在均匀流的基础上建立起来的。
Most of the natural river flows are non-uniform, but the start and the starting velocity drag force formula for formulas are based on uniform flow up.
本文结合琅琊山抽水蓄能电站下库库区原状土起动流速试验，对以往所采用的粘性泥沙起动流速公式进行了讨论。
In this paper, the formulas of starting velocity on cohesive sedimentation are discussed, combined with experiments of natural cohesive sedimentation in Lang-ya Mountain Pumped Storage Power Station.
建立了能反映非均匀床沙暴露作用及隐蔽作用的计算非均匀沙起动流速的简化模式，通过专门安排的非均匀沙起动流速试验及分析川江野外观测资料，确定了计算公式的系数。
A simple model used to compute the velocity of threshold motion for each grain size of the non-uniform sediments in consideration of both their expose and shelter actions is established;
通过该方程与水沙条件的分析，进一步验证了散粒体泥沙起动的流速公式。
Based on the analysis of the equation and condition, the starting current velocity formula about the pill sediment is further proved.
并以该流速公式为基础，按照颗粒极限平衡的受力得出了非均匀沙的起动公式。
And then, according to the condition of limit equilibrium of forces, a formula about non uniform sediment incipient was deduced.
并以该流速公式为基础，按照颗粒极限平衡的受力得出了非均匀沙的起动公式。
And then, according to the condition of limit equilibrium of forces, a formula about non uniform sediment incipient was deduced.
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