Abstract: In order to minimize the damage of dynamic pressure to the reuse roadway，four support optimization schemes are designed for the geomechanical parameters of the reuse roadway based on the analysis of the current support methods. Through numerical simulation，the roof subsidence，floor heave and side displacement were analyzed，and the economic cost was considered to determine the optimal sup⁃ port scheme of the reuse roadway. Through the actual monitoring，the roadway surface displacement of the new support scheme is reduced by about 50 % compared with the original support method，and the sur⁃ rounding rock deformation of the reuse roadway is effectively controlled.

Key words: reuse roadway, numerical simulation, dynamic pressure, supporting