<p>Mining of gently inclined coal seams is characterized by asymmetrical fracturing of key strata and complex movement and deformation. The 15,205 panel of Fuda Coal Mine was selected as the research background. A combination of theoretical analysis, field measurements, and numerical simulations was employed to investigate the characteristics of support resistance distribution under the breaking law of overlying key strata in gently inclined coal seams. The research shows that: (1) As the coal seam dip angle increases, the horizontal force within the key strata gradually intensifies, and the reduction rate of the fracture angle at the lower end of the working face exceeds that at the upper end. Consequently, the uncompressed area of the goaf migrates as a whole towards the upper end of the panel. (2) The support loads on inclined coal seams displays a “saddle-shaped” distribution. The load ratio of the non-solidified area B1 to area B increases with the dip angle of the coal seam. (3) As the compaction degree of the lower end of the goaf gradually increases, the maximum vertical displacement of the overburden, the vertical stress reduction zone, and the fracture propagation shift towards the upper end of the panel.</p>