Abstract:
In order to study the influence of working face mining on the above high-level pool, numerical simulation method was used to study the influence of working face mining on the deformation and tilt of the high level pool in the direction of slanting longitudinal direction and mining direction, and a reinforcement program was designed for the pool.The results show that during the working face mining process, the maximum vertical displacement of the pool in the direction of inclined length is 1 687.1 mm, the maximum tilt rate is 3.53 mm/m, the maximum horizontal displacement is 193.1mm, and the maximum deformation is 0.16 mm/m; the maximum vertical displacement of the pool in the direction of working face mining is 1 387.5 mm, the maximum tilt rate is 18.3 mm/m, the maximum horizontal displacement is 471.3 mm, and the maximum deformation is 11.3 mm/m.The working face mining is likely to lead to the serious subsidence and deformation of the base plate of the pool, and the structure will be destabilized.Reinforcement programs such as pool foundation reinforcement, pool structure thickening and grouting reinforcement in the fissure zone of goaf are proposed to ensure the foundation bearing capacity and overall stability of the high level pool.