Abstract:In underground mines explored by the bottomless column segmented crumbling mining method, the ore mining and roadway excavation processes mainly include roadway excavation, blasting and recovery, pumice cleaning, secondary crushing, roadway support, shaft construction, etc., which usually require a lot of manual on-site work. The operators of roadway digging and recovery process are exposed to the working surface for a long time, which is labor-intensive and has poor working environment, and there are safety risks such as roofing, flaking and equipment strike. Adopting advanced mining operation technology, the Mengku iron ore mine uses dollies in all aspects of the mining operation cycle to realize mechanized operation. This enhances the essential safety of operation, improves the operating environment and reduces the labor intensity. Through on-site production practice, a complete, safe and efficient mechanized operation line has been formed to achieve the goal of reducing manpower.