Adjustable positioning device for tunnel secondary lining reinforcement cage

The utility model relates to an adjustable positioning device for a tunnel secondary lining steel reinforcement framework, which comprises two supporting batten pieces which are symmetrically arranged, an arc opening is arranged on the outer side of each supporting batten piece, the diameter of each arc opening is consistent with the diameter of a steel reinforcement of the tunnel secondary lining steel reinforcement framework A. A positioning rod piece is arranged between the two supporting batten pieces, and the positioning rod piece is connected with the supporting batten pieces. The positioning rod pieces are flush with the lower bottom faces of the supporting strip plate pieces, the positioning rod pieces are arranged perpendicular to the lower bottom faces of the supporting strip plate pieces, strip-shaped holes are formed in the positioning rod pieces in the rod length direction of the positioning rod pieces, the hole faces of the strip-shaped holes are parallel to the lower bottom faces of the support