针对传统的土石坝变形时效模型的一些不足之处，考虑时效模型应该具有力学依据，根据土的固结理论，提出了收敛的非线性时效模型。通过比较各模型时效分量的计算值与实测值，认为改进后的土石坝变形时效模型比传统时效模型合理。

Aiming at some insufficiencies of traditional timeeffect model of earthrock dam's deformation, considering that timeeffect model should possess mechanical basis, some convergent nonlinear timeeffect models are put forward based upon the theory of soil consolidation. Through comparion between measured and calculated timeeffect components for various models,it shows that the ameliorated timeeffect models of earthrock dam's deformation are more reasonable than the traditional one.