Water-rich railway tunnel drainage structure

The utility model discloses a drainage structure of a water-rich railway tunnel. The structure comprises a central ditch, inverted arches, a water passing culvert and drainage pipes, the central ditchis arranged above the inverted arch along the length direction of the inverted arch; a plurality of water passing culverts are respectively arranged on two sides of the central ditch along the lengthdirection; the water passing culvert is communicated with the central ditch through a drain hole; a plurality of inverted arches which downwards penetrate through are arranged along the central axisof each water passing culvert; wherein the inverted arch is arranged at the bottom of each water-passing culvert, the reinforcing piles extend into the soil base layer, a plurality of drainage pipes which downwards penetrate through the inverted arch and extend to the soil base layer are evenly or unevenly arranged on the two sides of the central axis of each water-passing culvert, water filteringlayers are arranged on the