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12209工作面两侧采空,左邻12211工作面采空区,以断层相隔,右邻12207工作面采空区。12209工作面直接顶板为厚度较大泥岩,比较软弱。工作面回采巷道受相邻工作面采动影响,顶板比较破碎。泥岩上部赋存厚度较小的煤层,受采动影响呈破碎状态,容易导致顶板离层。原有的支护方案不适用于孤岛工作面的回采巷道。通过数值模拟及分析,提出了新的支护方案,很好地解决了巷道变形问题,保持了巷道的稳定。
12209 mining face both sides of the mining, the left next to the 12211 face goaf to the fault apart, right next to the 12,207 face goaf. 12209 Face direct roof for thick mudstone, relatively weak. Mining face mining face affected by the mining face adjacent to the roof more broken. The upper part of mudstone is characterized by the smaller thickness of coal seam, which is crushed by the influence of mining. It is easy to cause roof separation. The original support scheme does not apply to the mining face of the island roadway. Through numerical simulation and analysis, a new support scheme is put forward, which can well solve the problem of roadway deformation and keep the stability of the roadway.