Support Reinforcement Technology in Soft Coal Roadway Under the Influence of Mining

Yuwu Coal Industry S2206 intake airway showed serious deformation and damage under the original supporting conditions due to the influence of mining. In order to ensure the normal use of the tunnel, through analyze the characteristics of deformation and destruction of the tunnel under original supporting conditions, we optimize the supporting schemes by universal distinct element code(UDEC), eventually determine the bolting shotcreting and grouting support scheme, then carry out the implementation and effect-monitoring. Numerical calculation and field monitoring results show that tunnel deformation and plastic zone is effectively controlled by bolting shotcreting grouting support scheme.