Abstract: The dangerous area of underground mines have complicated working conditions and scattered personnel,which often lead to accidents due to the unauthorized intrusion of unrelated personnel and the failure to timely deal with them.In order to improve the intelligent level of dangerous area management and solve the problem of personnel control in dangerous area,based on the field investigation and demand of a mine,through the establishment of access control system workflow and overall topology relationship model,the overall scheme of the system is designed.Through the reasonable distribution and installation of the function modules,the integration of the function modules of the access control system is realized.Through the analysis of the existing network structure,the system communication local area network is built on the original network structure.Through the correlation between downhole management software and downhole dispatching center,a complete downhole and downhole two-level monitoring and management system is constructed.The access control system is tested in an iron mine in Anhui Province for two months.The results show that the overall function of the system is reliable and stable,the on-site feedback results is good.

Key words: Dangerous area, Two-level access control, Function module, Network structure