Abstract:
In combination with production geological conditions in Xinrui Coal Mine No.4 and No.5 coal seams, with the method of numerical calculation, we revealed the influence of the buried depth on the roadway deformation under close single, double coal pillar and the coal pillar group. Results show that deformation of roadway under the residual coal is large, and deformation of roadway under goaf is small, deformation of roadway under the border of pillar and goaf is minimal. As the depth increased from 100 m to 700 m, deformation of roadway under coal pillar and goaf nearby the coal pillar increases significantly.