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针对煤仓上部卸载硐室断面大、围岩软弱的特点,模拟分析了断面尺寸、软弱围岩对围岩稳定性的影响,提出了大断面卸载硐室主动强力支护围岩稳定控制对策:分区耦合支护+关键部位强力支护+窄岩柱对穿锚索支护。实践表明,所采用支护技术有效控制了大断面卸载硐室围岩变形,实现了围岩稳定。
According to the characteristics of large unloading chamber section in coal bunker and weak surrounding rock, the influence of section size and weak surrounding rock on the stability of surrounding rock is simulated and analyzed, and the stability control measures for the surrounding rock of unloading chamber with large section unloading are proposed. Partition coupling support + key parts of the strong support + narrow rock columns to wear anchor cable support. Practice shows that the supporting technology adopted effectively controls the deformation of the surrounding rock of unloading chamber with large section and realizes the stability of surrounding rock.