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通过对变形曲线的分析，提出了研究围岩变形规律的特征值法，根据大量实测曲线中几类特征值离散性小的特点，介绍了该法在围岩变形形态分类中的应用。
Based on the analysis of the deformation curve, the eigenvalue method is proposed to study the deformation law of surrounding rock. According to the small discreteness of several eigenvalues in a large number of measured curves, the application of this method in the deformation classification of surrounding rock is introduced.