Stress Dissymmetry Characteristic of Roadway Influenced by Strong Dynamical Pressure and Coal-wall Control

For surrounding rock engineering environment of 7603 transportation roadway in Wuyang Colliery, a concept of wholly reinforcement supporting coal-wall was put forward on the basis of surrounding rock stress and deformation dissymmetry characteristic after adjacent face's mining which designed control system from reinforcing weak coal-wall, constructing powerful supporting structure and improving whole supporting stiffness.Coal-wall reinforcement projection was determined and applied in the roadway.Practice showed that the projection effectively solved the difficult problem of supporting roadway under this condition and kept the roadway stable.