Stress and deformation analysis of high concrete faced sandy gravel dam on deep overburden layer

Based on double yield surface model, the deformation and stress states of key parts of high concrete faced sandy gravel dam at Chahanwusu, Xinjiang are calculated and analyzed. The results show that the law of the calculated results is consistent with measured results on the whole. The settlement of dam accounts for 0.54 % of dam height, and the ratio of overburden layer settlement to its thickness is 0.75%. The panels and diaphragm wall are mainly subjected to compression, with a small range of tension. This paper can provide guidance for the construction and design of extra high or high faced sandy gravel dam on deep overburden layer.