Abstract:
For the geological condition of roadway completely driven along gob in 1201 mining face of a mine in Liaoning Province,roadway-side supporting body was easily be destroyed by dynamic force.Flexible cushion was added at the top of supporting body and pre-stress steel bar was applied at the side of supporting body.Pre-stress anchored bolt and cable supporting system was used in roadway supporting,aided by W-style steel belt at the coal side and wood prop for reinforcement,to eliminate unbalance load.FLAC
3Dnumerical simulation found that cutting roof ability of roadway-side supporting was strong and supporting effect was excellent.Field observation for roadway displacement showed that the roadway driven along gob was stable and that the support project could be used in practice.