Die for inverted filter of tunnel drainage blind pipe

The utility model relates to the technical field of tunnel construction, in particular to a mould for an inverted filter of a tunnel drainage blind pipe, which comprises a primary support and a waterproof plate, the drainage blind pipe for drainage is longitudinally mounted at the bottom between the primary support and the waterproof plate, and a limit steel bar is fixedly connected to the bottom support part of the drainage blind pipe. One side of the limiting steel bar is fixedly connected with the primary support; a plurality of groups of longitudinally arranged precast slabs are mounted above the drainage blind pipe, the bottoms of the precast slabs are arranged in a cambered surface manner, and the bottoms of the precast slabs are in close contact with the upper surface of the drainage blind pipe; during tunnel construction, the prefabricated plates which are longitudinally and uniformly distributed are mounted above the drainage blind pipe, and the prefabricated plates are connected in series through th