Abstract: Aiming at the problems of mining gently inclined ore body in Meishan Iron Mine,to optimize the design of the production exploration,gently inclined ore body occurrence condition is determined.according to the ore body occurrence condition,optimize the mining structure parameters,and determine the blasting parameters of matching.Numerical simulation analysis is carried out of slowly inclined ore body pillar recovery stress distribution of tunnel,determine reasonable specifications of tunnel.Using smooth blasting technology to reduce the disturbance and damage of blasting to surrounding rock ,and the research is carried out to solve the process problem.The effective recovery of gently inclined ore body resources is realized.

Key words: Gently inclined ore body, Structural parameters, Blasting parameters, Smooth blasting, Blasting failure