【摘要】 长春地区分布着第四纪（Q₂—Q₃）的黄土状土,一般厚10～20m,主要为粉质粘性土。宏观上呈块状、粒状结构,微观上主要为团粒结构、大孔隙少,游离氧化物含量少,虽具有典型黄土的特征,但无湿陷性。本文依据其特殊的成分和结构特点,着重探讨其无湿陷性的原因。更多还原

【Abstract】 The Quaternary （Q₂—Q₃） loess-like soil is distributed in the Changchun area and its thickness is up to 10—20m, in which the silty clay is dominant. Macroscopicly, it occurs as massive and granular textures; microscopicly, the lump-granular texture is dominant, the big porosity is not much and the content of free oxide is low. Although it has some characteristics of the typical loess, non-collapsibilty can be seen. According to the unusual components and textural characteristics, the causes of non-collapsibility are discussed in this paper.更多还原