本文系统地研究了振荡网格生成的湍流效应对初始泥沙运动和沉积物再悬浮的影响,总结了影响泥沙运动和沉积的因素,给出了沉积物在宏观角度移动的基本概念和观点,并详细讨论了湍流对于沉降速度的影响。结果表明,湍流扰动对初始泥沙运动有重要影响。悬浮层内的浓度分布与沉积物特征和湍流结构有关。粒子沉降速度是一个关键参数,它主要受泥沙粒径分布和流体运动影响。 In this paper, we systematically studied the effect of turbulence generated by oscillation grid on initial sediment movement and sediment resuspension, summed up the factors affecting sediment movement and sedimentation, and provided the basic concepts and perspectives of sediment movement in a macro perspective , And discussed in detail the turbulence on the settlement velocity. The results show that turbulent disturbance has an important influence on the initial sediment movement. Concentration distribution in suspended layer is related to sediment characteristics and turbulence structure. Particle sedimentation velocity is a key parameter, which is mainly affected by sediment particle size distribution and fluid motion.