In response to the problems such as large cross-sectional size of the mining roadway and difficulties in support due to the large thickness of the 4-2 coal seam in Jianzhuang Mining Comapany,theoretical calculations,numerical simulations and other methods were used to determine the support parameters of the mining roadway.On-site tests were conducted in the 4-2 403 transportation roadway.The on-site mine pressure monitoring results showed that the deformation of the surrounding rock of the roadway increased sharply only within a range of 10 m from the working face,the deformation of the surrounding rock and the separation of the roof were within the allowable range overall,and the anchor rod support was in good condition,so the design of the support plan was reasonable and feasible.
关键词
厚煤层/围岩变形/巷道支护/支护设计
Key words
thick coal seam/surrounding rock deformation/roadway support/support design
万方数据