【摘要】 本文首先简要地回顾了泥沙起悬与沉降量确定的研究现状,然后通过引入泥沙扬动条件,根据近底水流中湍流脉动的随机特性,利用概率统计的方法确定泥沙的起悬与沉降量,以此来反映悬移泥沙在其运动底部边界上所发生的质量交换,最后用悬沙不平衡输移计算对此进行了验证。更多还原

【Abstract】 In this paper, we first briefly recall the condition about research on the sediment quantities of being picked up from and deposited on the bed; then by inducting the critical conditions for inception of suspended sediments and considering the random character of pulsation in the near-bed turbulence, the probability and statistics method is adopted to determine the quantities of suspended sediment picked up from and deposited on the bed by folw and gravity, which represent the exchanges of near -bed suspended sediment; and at last, through the computation about suspended sediment transport verify them.更多还原