Abstract: In order to determine the support parameters of the return airway in the 1310 fully mechanized top coal mining face of Guojiahe Coal Mine, the specific support parameters of the roadway surrounding rock were calculated using the loose circle theory and suspension theory, and verified through numerical simulation and field practice.The results show that: Based on the loose circle theory, the loose circle range of the roadway roof is l_s=3.1 m, and the loose circle range of the two sides is l_e=2.35 m.However, through the suspension theory calculation, the anchor rod specification is ϕ22 mm×2 800 mm and the anchor cable specification is ϕ21.8 mm×8 300 mm, both of which effectively pass through the loose circle range of the roadway surrounding rock.Through numerical simulation, it is found that using this support method in the roadway reduces the displacement of the surrounding rock of the roadway roof by 62% compared to the conditions where no support form is applied in the roadway; The horizontal displacement of the two sides decreased by 24%,and the phenomenon of rock separation in the roadway roof and the width of plastic zone failure in both sides were reduced.Through on-site monitoring and drilling observation, the displacement of the roadway roof, right side, left side, and floor reached 86 mm, 57 mm, 49 mm and 21 mm, respectively; When the drilling depth reaches 0.4 m, the surrounding rock of theroadway is mainly composed of circular cracks with obvious development.When the drilling depth reaches 2.5 m, the surface of the surrounding rock is intact and basically smooth, indicating that the surrounding rock of the roadway is in an elastic state.