The theory of arch dam design adopted at present can't illustrate the state of stress of the thin arch dam beyond the scope of elasticity.

In the project design of the Dongfeng Hydropower Station, the super thin high double curvature arch dam at the world level has been finally selected according to the continuous optimization design.

For the resistance and mountain body of Shuanghe arch dam is thin and weak, safety factor of abutment stability is low.