中国矿山工程

An iron mine is an ultra-large scale and ultra-deep one. Its ore body is particularly thick, thus the mining area is large. In order to ensure the safety of mining, it is planned that large strip pillars will be arranged between the panels, the numerical simulation method is used for a comparative study on the stress characteristics of the pillars, which mainly reveals the load-bearing function of the pillars in the panel. The results of the study can provide a reference for reserving and arranging pillars under similar mining conditions.