Abstract:
For the problem of gob-side entry driving affected by upper working face under the condition of opposite mining direction, the balance supporting technology for gob-side entry driving is proposed. The mechanics and numerical simulation method are used to analyze the stress and deformation of roadway surrounding rock, and the three design support schemes are analyzed. The results show that the stress of the support pressure and lateral support pressure are obviously concentrated along the side of roadway goaf. Under the same condition of the roof support strength, properly reducing the distance between anchor bolts can reduce the displacement of two-side of the roadway; properly increasing the support strength of the lanway’s side along the goaf can promote the overall balance of the roadway. For the support system, the support strength of lanway’s side is further strengthened in the practical application.