主成分-逐步回归在滑坡稳定性分析中的应用

多元回归分析是概率统计理论滑坡稳定性研究中的一种重要应用。然而,一般多元回归方法存在局限性,本文引入主成分-逐步回归模型,既尽可能全面考虑到各影响因素,又能解决因素之间多重相关性可能带来的误差。在理论探讨的基础上,本文结合巴东县赵树岭滑坡研究进行了工程实例分析。

Applications of principal component-stepwise regression analysis to stability analysis of landslide

With the shortage of traditional stepwise regression algorithm known, the writer establishes regression-prediction equation of stability coefficients by principle component- stepwise regression model. This method is founded upon quantitative analysis (equilibrium limit method) in which influences from every sensitive factors are wholly taken into account as possible. Besides it eliminates possible error due to correlation of variables, consequently it is more effective than common regression algorithm in prediction. In fact, the method is another extending of quantitative analysis. On the basis of theory discussion, we proceeded a engineering instance analysis with the Zhaoshuling landslide as an example.