一、用粒径计分析细沙级配存在的问题我国河流泥沙颗粒分析广泛采用粒径计分析法。自1959年起,长办水文处也应用此法进行泥沙颗粒分析工作。但在实际工作中,发现粒经计法分析得到的级配成果,比其他方法的颗分成果偏粗,特别是分析细沙时,问题更加 First, the use of particle size analysis of sand grading problems China's sediment particle analysis widely used particle size analyzer. Since 1959, the Chief Executive's Office has also applied this method to sediment particle analysis. However, in practical work, it was found that grading results obtained by the method of granulation were more coarse than those of other methods, especially when analyzing fine sand, the problem was more