Abstract: The horizontal tectonic stress is one of the important factors that influences the displacement,variation of stresses,and stability of surrounding rock of roadway.In order to deal with the influences of the horizontal tectonic stress on the surrounding rock stress and strain of mine roadway,Numerical simulation research on the dynamic changes of the different side stresses under the roadway support is implemented by combining with the ANSYS and FLAC3D software.According to the numerical simulation results,the curve of different coefficients of horizontal pressure( the value of λ can be 1.0, 1.2, 1.6, 2.0) and roadway deformation is obtained and the displacement of surrounding roadway,change of stress,and the distribution rule of roadway surrounding plastic range are analyzed in detail.On the whole,the numerical simulation and analysis results in this paper can provide reliable reference for exploiting and maintaining of the roadway.

Key words: Horizontal stress, Numerical simulation, Coefficient of horizontal pressure, Surrounding rock stress-strain