Abstract:
Aiming at the situations of deformation and failure in the roadway surrounding rocks during the mining process of Ⅲ313 working face in Shitai Mine, based on the results of the numerical simulation and filed data, this paper studied the regularity and complexity of the deformation and failure of mining roadway surrounding rocks under advanced abutment pressure. The results show that characteristics of stress distribution of mining roadway surrounding rocks are different from inclined and gently inclined coal seams; and pressure behavior are not the same in upper and lower drifts; the pressure in haulage drift is higher than tail roadway. The study provided the distance of advance support and the key position for roadway support.