摘要
对以往的各种推移质输沙率公式中的水流强度指标进行了综合、归纳 ,提出了统一的水流强度指标形式 ,并由此推导出推移质输沙率公式的统一形式 .利用 75 7组实测水槽资料对该统一形式中的系数进行了率定 ,并与其它几个推移质输沙率公式比较表明 。
Selecting an appropriate flow intensity parameter is a fundamental problem in establishing a bed load transport equation. After analyzing various measures of flow intensity, it is found that they can be expressed as a generalized form which can be transformed in to the existing flow intensities by assuming different coefficient and exponents. Based on this generalized flow intensity, a unified sediment transport equation is proposed. This unified equation can summarize most of the available bed load transport equations . By using 757 sets of flume data, the coefficients and exponents in the generalized bed load equation are determined. Comparison shows that this equation is superior to Meyer Peter and Muller, Ackers White , and Engelund Fredsoes bed load equation.
关键词
推移质
输沙率
水流强度指标
统一形式
水槽资料
bed load
sediment transport rate
flow intensity
unified form
flume data
