Anchor pipe and mounting method and recovery method of anchor pipe

The invention discloses an anchor pipe and a mounting method and a recovery method of the anchor pipe. The anchor pipe and the mounting method and the recovery method of the anchor pipe are invented for solving the problem that an existing anchor pipe cannot be recovered. The anchor pipe comprises an anchor pipe body, wherein a slurry injection channel and a gas injection channel which penetrate through the anchor pipe are arranged in the anchor pipe body in the axial direction; and a spiral blade is arranged on the outer surface of the rear section of the anchor pipe. Dual-channel slurry injection is adopted for the anchoring section, the anchor pipe penetrates while rotating, slurry and soil are fully stirred and mixed, an anchoring body of a certain size is formed at the anchor end, and the anchoring effect is good. The spiral blade is arranged on the surface of the anchor pipe, and with the aid of gas injection, the anchor pipe can be conveniently rotated out, recovered and used again.