Based on the measure data from a dam level displacement,the principle,reslut and displacement factors and method of the combined model and determined model is proposed in this paper.

• 结合坝顶水平位移实测资料,介绍某水电大坝水平位移混合模型和确定性模型的建模原理、模型成果、坝体变形参数和温度线膨胀系数反演的方法和成果。