Analysis on stability of soft foundation for embankment dam with cone penetration test

Both the vane shear test and cone penetration test are carried out within 16 investigating regions in Gongming District of Shenzhen;from which the relationship between the in situ undrained shear strength and the cone point resistance of the cone penetration test for the typical foundation soil is analyzed and the relevant expressions are given.Based on empirical formula,the result of the point resistance of the cone penetration test is converted into the index of the undrained shear strength of the in-situ soil and then used to analyze the anti-slide stability of the soft foundation for the embankment dam of Gongming Reservoir in Shenzhen;by which the impacts from both the non-homogeneity of the foundation soil and the geological defects concerned on the dam slope are also reflected.