Abstract:
For the problems of larger section, intense strata behaviors, strong mining disturbance, large deformation and serious damage and difficult to support of surrounding rock with large mining height, taking mining roadway in Lu’an Group Wangzhuang Mine 8101 working face with large mining height as engineering background, we analyze the mechanism of roadway surrounding rock control, propose rigid and soft joint grouting support scheme, and use finite difference software FLAC
3D to simulate the various supporting parameters impacting on the stability control of surrounding rock of roadway. Simulation results show that: through the rigid and soft joint grouting support in roof, the range of plastic zone of roadway is decreased significantly; the convergence of roof and floor, and the relative displacement of both sides are under controlled, which ensures the stability of the roadway.