CHINA MINE ENGINEERING

An iron mine is a large deep open pit. After the completion of open-pit mining, it will be transferred to underground mining. In order to block the hydraulic channel between the open pit and the underground, and maintain the stability of the high and steep slope, it is planned to backfill the open pit with cemented and solidified tailings. In this paper, the numerical simulation method is used to simulate the interaction between open pit solidification backfilling and underground mining. The results show that there is basically no interaction between open pit solidification backfilling and underground mining. The research results can provide reference for mines under similar mining conditions.