Abstract:Pillar stability is the premise of safe and efficient mining in mines. It is of great significance to study the factors affecting the stability of pillars and their sensitivity for the safety management of pillars. In this paper, a method for analyzing the influencing factors of pillar stability based on rough set theory is proposed, and a manganese ore room-and-pillar mining stope in Sichuan Province is taken as the research object. Firstly, the influencing factors of pillar stability were analyzed. Then, the sensitivity analysis of each influencing factor is carried out by using rough set theory, and the importance of each influencing factor to pillar stability is calculated. The results show that the importance of room width is 0.381, which has the most significant effect on the stability of pillar. The method is objective and effective for the sensitivity analysis of the influencing factors of pillar stability, which can provide theoretical basis for the safety management of mine pillar and the optimization of pillar size.
