The shape of vertical section with settlement deformation is in highly accordance with the shape of top silty clay layer before unloading.

卸载前沉降变形纵剖面形状与粉质粘土层顶板面形状非常一致；

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Abstract: : the soft soil roadbed is mainly composed of clay and silty soil fine particle content of soft soil, the gap of the organic soil, peat soil and loose sand soil layer.

摘要：软土路基主要由粘土和粉土等细微颗粒含量多的松软土、空隙大的有机质土、泥炭土以及松散砂等土层构成。

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We also discover the Lower Quaternary limit locates in M/G boundary or the interface between the grey-green clay-silty sand layer and brown-red silty clay sand layer.

研究表明第四纪下界存在于该剖面的灰绿色粘土粉砂质砂层与红褐色粉砂粘土质砂层之间（即M／G面上）。

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