李文萍, 曹叔尤, 刘兴年. 泥沙颗粒形状对非均匀沙起动条件的影响[J]. 水科学进展, 2007, 18(3): 342-345.
引用本文: 李文萍, 曹叔尤, 刘兴年. 泥沙颗粒形状对非均匀沙起动条件的影响[J]. 水科学进展, 2007, 18(3): 342-345.
LI Wen-ping, CAO Shu-you, LIU Xing-nian. Effect of grain shape on incipient motion of non-uniform sediment[J]. Advances in Water Science, 2007, 18(3): 342-345.
Citation: LI Wen-ping, CAO Shu-you, LIU Xing-nian. Effect of grain shape on incipient motion of non-uniform sediment[J]. Advances in Water Science, 2007, 18(3): 342-345.

泥沙颗粒形状对非均匀沙起动条件的影响

Effect of grain shape on incipient motion of non-uniform sediment

  • 摘要: 根据非均匀沙颗粒的不均匀性,引入颗粒形状系数,通过分析泥沙颗粒形状系数和相对暴露度的影响,建立了等效粒径表达式;并通过泥沙起动受力分析,推导得到泥沙起动临界条件表达式.实测资料验证表明,计算值与实测值符合较好.

     

    Abstract: Based on non-uniformity,the grain shape coefficient is introduced.By analyzing influence of shape coefficient and exposure degree,the formulas for calculating equivalent grain and the incipient motion condition of non-uniform sediment are established by the relative exposure degree and shape coefficient.Verified by using the experiment data,the result shows that the experiment data are adjacent to the measured value.

     

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