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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。
Taking the Laiwu Gujiatai iron mine as the research background and the FLAC3D software, the influence of the stope depth, the rock parameters, the aspect ratio and the cross-sectional area And other influencing factors were systematically analyzed. The results show that when the depth is deeper, the cross-sectional area is larger, the ratio of width to height is closer to 1: 1 and the quality of surrounding rock is worse, the hexagonal mining is more effective than traditional rectangular mining in limiting roof displacement and improving surrounding rock The more obvious the advantages of force, more suitable for high stress rupture rock mass environment. Accordingly, the reasonable size of the hexagonal mines under the current mining conditions is confirmed, which is of reference value to the deep mining design of the Gujiatai Iron Mine.