中文摘要：

以莱芜谷家台铁矿为研究背景,结合FLAC3D软件,对影响六边形进路下向充填采矿法采场稳定性的采场埋深、围岩参数、进路宽高比和横截面积等影响因素进行了系统分析。结果表明：埋深越深、横截面积越大、宽高比越接近1∶1以及围岩质量越差时,六边形进路开采比传统矩形进路开采在限制顶板位移和改善围岩受力方面优势越明显,更适用于高地应力破碎岩体环境。据此,确认了当前开采条件下六边形矿房的合理尺寸,对谷家台铁矿深部开采设计具有参考价值。

英文摘要：

In Gujiatai iron mine,the influence factors on the stope stability under hexagonal downward drift mining with backfill were tested systematically by FLAC3 D,such as the buried depth,surrounding rock parameters,aspect ratio of the drift and cross-sectional area.The results showed that for controlling the roof displacement and improving the force of surrounding rocks,the hexagonal mining method had obvious advantage under the conditions of deeper depth,larger cross-sectional area,aspect ratio close to 1∶1,and bad quality of surrounding rock.Thus,this new method was suitable for high stress environment with broken rock mass.Hereby,the reasonable size of hexagonal stope under current mining conditions was confirmed,which had reference value to deep mining design of Gujiatai iron mine.