Transition period connection mining technology from open-pit to underground in marble mines
TIAN Pengbo
Abstract：During the process of transitioning from open-pit to underground mining in marble mines,there are challenges such as effectively connecting the two mining methods,ensuring the stability and continuity of the mining process,and the difficulty of extracting boundary pillars.The article proposes a transition plan that preserves permanent boundary pillars to fully ensure the stability of underground ore body mining.Based on the characteristics of underground mining technology,the article proposes a step sawing type adit mining technology suitable for stone deposits.The safety and stability of underground mining in the first and middle sections and multiple sections are analyzed through numerical simulation.The article obtains that the stability of the mining site may decrease and instability damage may occur After the third section is mined.
Keywords：transition from open-pit to underground miningboundary pillarnumerical simulationtransition period connection
Publication Date：2025-04-30
Online Publishing Date：2026-01-31(First online date of this platform, not the publication date of the document)
Pages：5( 46-50 )