Abstract: According to the wall-rock supporting features and wall-rock deformation mechanism of powder ores' rock tunnel in Jinshandian Iron Mine，the numerical simulation on the wall-rock surroundings is made.And the poyting-thomson constitutive model is defined based on FLAC3D background.Through the contrast and summary on the bolting shotcrete support schemes that are initially designed，the optimal supporting proposal is obtained through the adjusting supporting parameters.This method can be applied in the other mining tunnel to select the appropriate supporting and then to be improved.It has advantages of low-cost，simplicity，high capacity of post-processing.

Key words: Mining engineering, Roadway stability, Convergent deformation, Bolting shotcrete net