In order to solve the problem of poor stability of surrounding rocks during the period of collapsed column in the surrounding roadway, numerical simulation method was used to simulate and analyze the distribution of stress and plastic zone of surrounding rocks in the roadway without support, pre-grouting reinforcement and grouting plus anchor net support in the area affected by trap column, and the support scheme of pre-grouting reinforcement + active-passive joint support technology was proposed. The results showed that the scheme effectively controlled the deformation of the roadway surrounding rock.
李浩男. 厚煤层回采巷道掘进过陷落柱围岩控制技术研究[J]. 煤炭与化工, 2021, 44(6): 12-15.
Li Haonan. Study on the control technology of over-trapped column surrounding rock in thick coal seam recovery mining. CCI, 2021, 44(6): 12-15.