Abstract: In order to solve the support difficulty of roadway under section pillar of the adjacent coal seam, with the conditions of working face 21101 in Pingshuo No.2 underground mine, studied the stress distribution and displacement under different support plans with Flac3D, determined the optimum support plan. Practice results show that the roadway roof to floor convergence was 80mm and the movement between ribs was 85mm after 15 days of the new support plan, which means the roof sinking has been effectively controlled and the support parameters are reasonable.

Key words: Adjacent coal seams, Roadway Support, Numerical Modeling, Field measurement