Abstract: Based on distribution of surrounding rock stress in deep inclined seam roadway，the asymmetric distribution law of the plastic zone and stress of different cross-section roadway were studied by using numerical method， and a mechanical model of special-section roadway was established to determine the reasonable support mode. The results show that deep inclined seam roadway plastic zones extend along the dip direction of coal seam，failure of roof and floor is greater than that of ribs， and what is more， different damage and failure occur in ribs; the roadway shape affects the stress concentration， plastic zone and deformation; arched roadway adapts well， and special-shaped tunnel is likely to lead to shear failure-prone in the roof side corner， but taking roadway service life and mining issues into account， special-shaped tunnel can meet the requirements under the existing support conditions. The combination supports of “anchor net + steel band + anchor rope” are adopted to strengthen the rib beside roof and the roof coal for special-shaped tunnel， and the support stress should be above F_○1and F_○2. By this way， surrounding rock deformation is obviously reduced and the roadway can stay stable.

Key words: deep inclined seam； section shape； unloaded stress； stress arch, special-section