Aiming at the problems such as low utilization efficiency and poor safety of underground space due to large deformation caused by long-term creep during the reuse process of abandoned mine road-way,numerical simulation software FLAC3D was used to analyze the creep characteristics and stress varia-tion rules of surrounding rock of deep roadway under three support schemes.The research shows that the Burgers-Mohr creep model can scientifically simulate the creep characteristics of roadway during the service period of underground space utilization.Among the three support schemes,the bolt + prestressed anchor ca-ble + steel arch support has the worst effect and is only suitable for short-term support.Lining and support-ing effect is second;Bolt + prestressed anchor cable + lining support has the most obvious effect.Rigid and flexible support can effectively control the deformation of roadway surrounding rock,and the creep force of surrounding rock can be controlled in a small range,resulting in stable creep of roadway.The research re-sults can provide a theoretical basis for the safe utilization of underground space in abandoned mines.
NETL
NSTL
维普
万方数据
