Foundation pit supporting structure, underground structure and foundation integrated structure

The utility model relates to the technical field of foundation pit supporting. The utility model further discloses an integrated structure of the foundation pit supporting structure, the underground structure and the foundation. The device comprises a soil wall, a horizontal soil retaining plate is arranged on the inner side of the soil wall, the horizontal soil retaining plate is fixedly connected with the soil wall, a stand column is arranged on the inner side of the horizontal soil retaining plate, the stand column is fixedly connected with the horizontal soil retaining plate, a supportingplate is arranged on the inner side of the stand column, and the supporting plate is in sliding connection with the stand column. The foundation pit supporting structure, the underground structure andthe foundation are integrally constructed; a rotating motor and a drill bit are arranged; when the stand column is fixed underground, a pit matched with the stand column does not need to be dug in afoundation pit, the rotatin