English：

In view of the problems of multiple qualitative factors, difficult risk quantification, and difficultbalance between subjective and objective needs in the process of subway shield selection, acomprehensive evaluation model of shield selection based on CRITIC⁃AHP combination weighting andgame theory decision analysis is proposed by taking the Nanchang Rail Transit Line 4 Project as thebackground and comprehensively considering the construction unit's own assets and purchase constraints.Firstly, the shield adaptability evaluation system was constructed from five dimensions: dynamiccharacteristics, spatial response, reliability and risk prevention and control, muck improvement, andeconomic and resource supportability. Secondly, the CRITIC⁃AHP model was used to realize the couplingcalculation of index weights, which effectively balances the objective strength of expert experience andgeological data, and identifies that the reliability index has the highest weight (0. 38) in complex strata.Then, by constructing the income game matrix between the constructor and the geological environment,the strategy evolution law under the fluctuation of risk probability was revealed, and the robust decisioncriterion of critical equilibrium point 1-p
∗ = 36% was established. Finally, the model was applied to theshield machine selection practice of Nanchang Rail Transit Line 4. The results indicate that thecomprehensive adaptability score of the model is high. After coupling the safety weight, its targeteddesign can significantly hedge against extreme geological losses, which verifies the scientific nature androbustness of the selection scheme.