Abstract: The coal pillar's rational width directly affects the gob-side entry surrounding rock control effect of the isolated fully mechanized caving face. Aiming at the geological conditions of the 8105 isolated fully mechanized caving face, and the combined supporting technique of wire meshes beam and cable anchor was put forward. Based on the support scheme of the 8105 track transport roadway, the nonlinear numerical calculation method was adopted to analyze the surrounding rock control effect under the condition of different coal pillar width. The project application effect indicated that the coal pillar width of 6.5 m was reasonable, and the supporting scheme can control the roadway's deformation effectively, and the satisfactory technical and economic effects were obtained.