Taking 39204 working face of extremely thick coal seam of A Coal Mine as an example,a small coal pillar roadway protection technology suitable for dynamic pressure roadway of extremely thick coal seam was introduced.FLAC3D numerical simulation software was used to simulate the stress distribution and deformation of the surrounding rock of the dynamic pressure roadway of extremely thick coal seam.Combined with the control theory of dynamic pressure roadway with small coal pillars,the control scheme of dynamic pressure roadway of extremely thick coal seam with small coal pillars was designed,and the scheme was applied to the engineering practice of extremely thick coal seam of A Coal Mine.It is confirmed that the proposed small coal pillar roadway protection technology of the dynamic pressure roadway of extremely thick coal seam is of strong feasibility.
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