Tunnel waterproof and drainage structure

The utility model relates to a tunnel waterproof and drainage structure. The structure comprises a tunnel lining, a tunnel inverted arch, a permeable concrete layer located on the outer side of the tunnel lining, a permeable base layer located on the upper side of the tunnel inverted arch and a hardened pavement, pavement side ditches are formed in the two sides of the hardened pavement, a central drainage pipe is laid in the permeable base layer, and first water guide pipes are communicated between the pavement side ditches and the central drainage pipe; a drainage ditch parallel to the length direction of the central drainage pipe is laid on the inner side wall of the tunnel inverted arch, a protective tile covers the upper side of the drainage ditch, and a water permeable opening is formed in the protective tile. Excessive accumulated water in the permeable base layer can enter the drainage ditches through the permeable openings under the action of gravity, so that the water content in the permeable base l