高应力环境下深部巷道布置位置的优化研究

Study on the Optimal Layout of Deep Drift Under High-stress Conditions

随着开采深度的增加 ,地应力增大、深部巷道的支护成本也显著增加 ,因此 ,研究高应力环境下深部巷道的最优布置位置具有重要意义。结合金川二矿区分段道的现场实际 ,采用数值模拟与相似材料模拟相结合的手段 ,对深部高应力环境下金川二矿区分段道的最优布置位置进行了研究 ,结果表明 ,分段道布置在溜井位置上盘 ,分段道受采动的影响明显减小 ,分段道围岩的应力环境得到改善 。

Strata stress increases with the increasing of mining depth, resulting in a remarkable rise of the supporting cost of drift. Therefore, it is important to study on the optimization of deep drift layout under high stress conditions. In the light of the practices of mining works in Jinchuan No.2 mine area, this paper adopts numerical simulation and similar material simulation experiment to research the optimal layout of sublevel drifts under deep high-stress conditions. The results have shown that the influences of mining on the sublevel drifts and the stress conditions of surrounding rock of the sublevel drifts is improved if the sublevel drifts are placed in the hanging rock of the draw raises, and this is advantageous to the stability of sublevel drifts.