1) channel erosion efficiency
冲刷效率
3) effectiveness of sluicing
冲刷效力
5) scour rate
冲刷率
1.
On the basis of the formula about scour of sediment and velocity stated in the literature,the relationships between frictional velocity and wet density,frictional velocity and scour rate are deduced.
利用文献中的底泥起动流速公式和冲刷率公式,推导出起动摩阻流速与湿密度公式、摩阻流速与冲刷率公式。
2.
Aiming at actual problems which traffic and hydraulic engineering encounters, this paper gains the critical shear and scour rate of starting undisturbed soil by adopting field undisturbed soil samples and conducting closed pipe hydraulic tests, and then gains the starting velocity of undisturbed soil by formula conversion.
针对交通、水利工程中遇到的实际问题,采用现场原状土取样,并通过封闭管道水力试验,得到原状土起动的临界切应力及冲刷率,并通过公式换算得到原状土的起动流速,这一方法可用来确定物理模型试验中动床模型设计参数,并可为设计部门提供科学依据。
6) erosion probability
冲刷概率
1.
The erosion probability of particles, the nondimensional step length and the exchange time used in Einstein s bed load function were modified by more scientists and several modified formulas have been proposed.
很多学者对Ｅｉｎｓｔｅｉｎ推移质公式建立过程中的冲刷概率、泥沙无因次单步运行距离和泥沙交换时间等方面进行了深入研究与改进，并得到了改进后的推移质输沙率公式。
补充资料：冲刷
水流冲击引起河、渠及海岸、库岸等土石流失或剥蚀的现象。被冲刷的泥沙随水流运动，可能在其他地点淤积。
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