The Relationship Between Shear Strength And Water Content Of Heifei Expansive Soil And Its Engineering Applying

Based on the analysis of geological background and the distribution of Hefei expansive soil, this paper discusses the relationship between them. Through tests the paper studies the relationship between shear strength and water content of Hefei expansive soil. A one-dimension numeric calculation model about the moisture variety in unsaturated expansive soil is built. The model can simulate the moisture variety in expansive soil in different rainfall conditions. Based the study mentioned before a model considering the effects of the rain infiltration on transient safety of unsaturated expansive soil slope is proposed and a computer program JYBP is developed. The slope stability influenced by the rain filtration is discussed in detail. Besides, the paper reveals the difference of mineral component between the fissured clay and the ambient soil by X-ray Diffraction test (XRD) and discusses its effect to seepage in expansive soil.