大坝位移监控模型各影响因子之间往往存在着多重相关性,给回归建模分析带来许多负面影响,采用偏最小二乘回归(PLSR)建模分析可以很好地解决这个问题。文中在简述PLSR原理的基础上,结合工程实测数据,建立了大坝位移监控的PLSR模型和逐步回归模型,并对两者进行比较分析,取得了较合理的结果。 There are often multiple correlations among various influence factors of dam displacement monitoring model, which have many negative effects on regression modeling and analysis. Partial least squares regression (PLSR) modeling analysis can be a good solution to this problem. Based on the principle of PLSR and PLSR data, the PLSR model and stepwise regression model of dam displacement monitoring are established. The comparative analysis between the two is made and a more reasonable result is obtained.