Abstract: Abstract:In order to reveal the influence of the ground deformation on the additional internal stresses of the power transmission tower in mining subsidence area, according to the law of ground deformation caused by underground mining, using the finite element model simulation, the variation laws of the additional internal forces of power transmission tower under acting of the ground unidirectional tensile deformation, the unidirectional compressive deformation, the bidirectional tensile deformation and the bidirectional compressive deformation were analyzed. The conclusion is that under the acting of the ground deformation, the stress of the main material in the foundation of the power transmission tower is maximum, the stress of the main material in the lower part of the power transmission tower is medium, and the additional internal forces of the main material in the top is minimum.

Key words: Keywords:mining subsidence area, ground deformation, power transmission tower, additional internal stress