Compressed air energy storage technology has a wide application prospect in the field of energy storage because of its economy

safety and high efficiency. Based on the finite difference method(FDM)

this paper uses FLAC3D software to simulate three kinds of cross section shapes(circle

horseshoe shape and gate cavity shape) of compressed air storage warehouse. The influence of different section shapes on the stress distribution

displacement deformation and plastic zone of surrounding rock is studied. The results show that the circular section exhibits good stability in both excavation and operation phases

the settlement and horizontal displacement of roof and floor are minimal

the stress concentration in vertical and horizontal directions is minimal

and the plastic failure area is minimal and evenly distributed. In contrast

there are significant stress concentration and uneven distribution of plastic zone in the section of horseshoe shape and city gate cave

and local failure is easy to occur. This paper provides a reference for the section shape optimization design of compressed air storage warehouse.