关键词: LMD模型, 统计回归模型, 特征量分离, 大坝变形

Abstract: The improved local mean decomposition (LMD) model is used to separate the physical characteristics of dam deformation monitoring data. The influence factors and degree of dam deformation effect are analyzed by the separated physical characteristics. Compared with the widely accepted statistical regression model, the results show that the LMD model can reasonably separate the physical characteristic components of dam deformation effect without relying on the mathematical expression in which influencing factors are determined beforehand. It is more adaptive and, to a certain degree, better than the decomposition result of statistical regression model.

Key words: LMD model, statistical regression model, separation of characteristic quantity, dam deformation