Abstract: Aiming at the traditional transportation mode of manual driving and manual ore drawing used in underground rail transportation of a metal mine，the underground rail intelligent unmanned trans⁃ portation control system is developed. Wireless communication，automatic control，locomotive autonomous dispatching control，laser radar，monitoring and monitoring，safety monitoring and fault diagnosis technolo⁃ gies are adopted to transform the frequency conversion and automatic control of the electric locomotive， build a wireless transmission network on the rail transport line，and develop and design the underground loading and unloading system and turnout signal system，so as to realize the intellectualization，unmanned and high efficiency of the whole process from loading to unloading of the underground rail transport system. Since its completion，the underground rail intelligent unmanned transportation control system has been op⁃ erated stably，safely and reliably，and the transportation efficiency has been greatly improved compared with the original system. There is no need for human intervention in the whole transportation process，and the post personnel have been removed，which greatly saves labor costs，greatly improves the working envi⁃ ronment of operators，improves the intelligent level of mines，and realizes the intrinsic safety of the trans⁃ portation system. The successful application of underground rail intelligent unmanned transportation control system in a metal mine meets the requirements of "mechanization，automation and intellectualization" in the construction of domestic non coal underground mines，and provides practical experience for the suc⁃ cessful construction of other mines.

Key words: electric locomotive, PLC , unmanned intelligent, accurate positioning, wireless commu? nication, intrinsically safe