不飽和土

[III-542] Basic study on construction of homogeneous unsaturated ground in desaturation method

*牧野 祥太¹、本多 顕治郎²、宮﨑 航²、小林 薫³ (1. 東海旅客鉄道株式会社、2. 株式会社エーバイシー、3. 茨城大学大学院)

Keywords:Desaturation method, Liquefaction, Liquefaction measures, soil improvement

In the current method of injecting air into the ground, it is difficult to reduce the degree of saturation in the ground, and there is a risk that liquefaction will occur even in unsaturated ground due to liquefaction generated in the saturated ground. Therefore, the authors focused on the characteristic that the degree of saturation of ground is lowered by the fall and restoration of the groundwater level, and clarified the liquefaction suppression effect in the unsaturated ground where the degree of saturation is heterogeneous, Tried to build a homogeneous unsaturated ground.