Abstract: In response to the problems of excessive reliance on manual operation in mine dispatching,poor equipment coordination,low production efficiency,insufficient intelligent dispatching technology,and difficulty in meeting the demands of large-scale production scheduling,a comprehensive analysis of the mining techniques and methods of underground metal mines was conducted. The mining methods and process spectrum of underground metal mines were summarized,and it was proposed that the parallel operation mode of multiple access routes,multiple mining areas,and multiple mining sections is the production mode for achieving efficient large-scale underground metal mine extraction. In view of the problems existing in traditional dispatching solution methods,three key dispatching issues,namely production plan formulation,equipment succession in mining, and equipment coordination in processes,were identified. It was proposed that dynamic dispatching and multi-objective solution algorithms are effective methods for solving the intelligent dispatching problems of large-scale underground metal mines. By analyzing the digital twin technology,it was found that it provides an intelligent service carrier for large-scale parallel operation modes and dynamic multi-objective dispatching. A digital twin system architecture for intelligent dispatching of underground metal mine equipment was proposed,which consists of the physical equipment layer,virtual twin layer,twin data layer,data transmission layer,and twin service layer. This provides technical support for the intelligent dispatching of large-scale equipment clusters in mining areas and is the inevitable path for the construction of intelligent mines. The research results are expected to provide theoretical and technical support for the further development of intelligent dispatching systems for underground metal mine equipment. 

Key words: underground metal mine,intelligent scheduling,digital twin,multi-objective optimization