Design and Application of Support for 4-2 403 Transportation Roadway of Pubai Jianzhuang Coal Industry Company
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.
thick coal seamsurrounding rock deformationroadway supportsupport design
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