Abstract:Roadway deformation problems such as roadway section shrinkage deformation appear under the influence of mining in a mining face. Aiming at the problem of stability control of mining roadway in this mine, based on the analysis of the stress environment and deformation characteristics of the deep mining roadways, with this mining main roadway as the engineering background, FLAC3D numerical simulation method is adopted to study the advancement of the working face The stress field and plastic zone evolution law of underground mining roadway, study the influence mechanism of mining coefficient on the stability of main roadway. The research results show that the supporting stress at the roof of the mining roadway is distributed in a “back shape” with the advance of the working face, and the plastic zone develops rapidly. When the distance between the working face and the roadway is less than 70 m Later, the stability of the mining roadway is significantly reduced, and the influence of mining induced stress coefficient λ on the stability of the roadway is significant, showing a negative correlation. When λ>3.0, a “butterfly” plastic zone appears in the upper part of the roadway, and the deformation is severe.