In order to study the stress distribution evolution of the surrounding rock during the protective seam mining process and to study the dynamic law influenced to the front floor gateway,based on the transmission law of the mining support stress in the front seam and seam floor,the FLAC2D was applied to simulate and analyze the surrounding rock stress distribution features of the mining face with different coal pillar width under the protective seam mining process in No.11 seam as in No.13 seam.The FLAC2D was...