Numerical Study on Deformation and Failure Characteristics of Rectangular Roadway

In the practical processes of coal mines and tunnel, rectangular roadways are widely used in underground environment. However, stress distribution law rock mass around is relatively complicated that influenced by different parameters, such as situ stress, geological structure, properties surrounding mass. It extremely significant to conduct systematic in-depth research regarding deformation failure mechanism roadways. Based on theoretical analysis, roadway under strength grades studied directly through this paper. This further reveals secondary field after excavation roadway. A mine intends excavate a mass, then, simulated FLAC3D software. Then, strain types obtained. The results show mainly shear tensile failure. roof floor failure, side Moreover, shifting dynamic variation process. damage degree greater than two sides Its related