Abstract: A comprehensive evaluation method was proposed for the mode of transition from open-pit to underground mining of TangSteel Shirengour Iron Mine, which considered the linkage degree betweem the open-pit mining and underground mining in time, space, integral production capacity and mining system, and realized a quantitative evaluation. The result indicates that the open-pit mining and underground mining of this mine have a low linkage degree in mining time, close relation in space, very low degree in utilizing its integral production capacity, and weak linkage betweem the two mining systems, and lack a unified all-sided plan.

Key words: Transition from open-pit to underground mining, Transition mode, Comprehensive evaluation