软弱岩层沿空留巷加固技术

On the Gob-side Entry Retaining Reinforcement Technology for Soft Rock Layers

结合具体工程实际,借助数值模拟手段分析沿空留巷巷道围岩变形与应力分布特点,并探索相应的支护加固技术。其实践成果证明,"锚注+锚索+锚杆"的联合加固技术能有效提升留巷围岩稳定性,为井下回采作业的安全开展提供了坚实保障。

Combining with concrete engineering practice, this paper analyzed the characteristics of deformation and stress distribution of surrounding rock in gob side entry retaining roadways by using numerical simulation and explored the corresponding supporting reinforcement technology. The practical results showed that the combined reinforcement technology of ＂bolt-grouting＋cable＋bolt＂ could effectively improve the stability of the surrounding rock, providing a solid guarantee for the safety of underground mining.