【摘要】 在经典力学的基础上,以某一概率为定量标准,根据斜坡上泥沙的受力状态,采用滚动模式进行理论推导,考虑了作用流速和颗粒位置的随机性、非均匀沙不同粒径之间的相互作用及不同倾角的影响,推导了斜坡上非均匀沙分组起动流速公式,通过实测资料验证表明,计算值与实测值符合较好.更多还原

【Abstract】 Based on the method of classical mechanics theory combined with a probability as quantitative criteria and according to the sediment stress states on different slopes,a rolling model was adopted to conduct a theoretic deduction.The flow velocity and the random position of non-uniform sediment on the sloping bed,the interaction between different particle sizes and the influence of different angles were taken into account;then the formula for calculating the incipient velocity of non-cohesive and non-uniform sediment on sloping bed was established.The validity of the formula is verified by experimental data.更多还原