把岩石、碎石土、砾砂、粗砂、中砂、细砂不加区别地当作非冻胀性土,而不考虑其天然含水量、地下水和粒度组成,忽视粘粒污染情况,是不严格的。本文提出对于渠道基土冻胀性分类增加一个密实度指标。 Indiscriminately treating rock, gravelly soil, gravelly sand, coarse sand, medium sand, and fine sand as non-frozen bulge soil, regardless of its natural moisture content, groundwater, and particle size composition, and neglecting the contamination of clay, it is Not strictly. This paper proposes to add a compactness index to the classification of frost heave of the subgrade soil.