按自然条件的形成与顆粒分析試驗的結果,黄河下游的土質多系由跳躍質泥沙所組成;为了分析它的压实性,茲將部分顆粒分析的有关成果列如下表: 从上表中可以看出,各种土質的不均勻系數多在10以下,甚至小于5。按苏联M·M·格里森教授的意見,土料顆粒所組成的不均匀系数在30～100时,屬于易压实的士料,而不均匀系数在5～10时,則屬于不 According to the formation of natural conditions and the result of particle analysis test, the soil of the lower reaches of the Yellow River is composed of jumping sediment. To analyze its compaction, the relevant results of partial particle analysis are listed as follows: It can be seen that all kinds of soil heterogeneity more than 10, even less than 5. According to the opinion of Professor M. M Gleeson of the Soviet Union, the nonuniformity coefficient of the soil particles is between 30 and 100, which belongs to the compacted material, and the non-uniform coefficient is between 5 and 10,