Research on the Method of Early Conversion from Open-pit Mining to Underground Mining in Iron Mines
Taking a certain iron mine project as the research background,based on the analysis of the main problems in the process of early conversion of open-pit mining to underground mining,specific mining methods are proposed,involving the specific points of open-pit mining boundary,conversion development system,engineering transition relationship,conversion plan,and pillar less segmented collapse method.At the same time,the mining process is optimized and the mining parameters are improved.Practice has shown that through this project,open-pit mining can be completed 5 years in advance,and underground production can be smoothly transferred while ensuring safety.This mining method is feasible and can provide reference for similar coal mining.
iron oreadvance transition from open-pit mining to underground miningmining methodstransition plan
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