Abstract:In order to improve the accuracy of surrounding rock stability assessment in underground metal mines, effectively analyze and handle complex problems with randomness, fuzziness, and the interaction between multiple indicator factors, based on engineering practice, five typical influencing factors were selected to construct a surrounding rock stability evaluation system, The improved analytic hierarchy process and improved criteria importance through inter criteria correlation are used to calculate the subjective and objective weights of indicators respectively. Based on Game theory, the optimal comprehensive weight of indicators is determined. Combined with the theory of multidimensional connection cloud model, a comprehensive evaluation model for the stability of surrounding rock of underground metal mine roadways is established. Using 14 typical tunnel projects in China as sample data for testing, and comparing the discrimination results and actual situations with two major models: fuzzy synthesis and unascertained measurement. Finally, the model is applied to the analysis and evaluation of the stability of the surrounding rock of a certain gold mine roadway. The research results show that the evaluation results of surrounding rock stability of underground metal mine roadways based on Game theory multi-dimensional connection cloud are completely consistent with the field investigation conclusions, which verifies the feasibility and effectiveness of this model in the evaluation of surrounding rock stability of roadways, and can provide an accurate and quantifiable new idea for the evaluation of surrounding rock stability of underground metal mine roadways.