Abstract: The mining-induced damage of vertical shaft wall under complicated stress conditions is a great threatening to safe production. Thus, accurate and fast evaluation of its security has been the focus of relevant researchers. In this paper, calculation model of vertical shaft wall with three-field coupling of stress-seepage-temperature has been established; the main damage modes and influence factors of vertical shaft wall have been studied combined with orthogonal design principle and multivariate statistical method. A rapid and accurate safety evaluation model has been given for the assessment of project and reference of the vertical shaft wall monitoring. Finally, the proposed method has been used for analyzing the vertical shaft of Wen Jiazhuang project, so as to verify the validity of this method.

Key words: vertical shaft wall, orthogonal design, multivariate statistical method, safety evaluation