Abstract: Huafeng Coal Mine belongs to the typical km deep well roadway. In this paper, a three-dimensional numerical caculation model was established by FLAC^3D,6 typical support schmes were designed, the support schme and parameters of km deep well roadway were optimized by analyzing the failure teatures of surrounding rock, the results showed that the full section bolt-grouting support had the advantages of full section support and small deformation, so it was a extremely reasonable support scheme.