Drainage structure for improving stability of silt stratum roadbed

The utility model relates to the technical field of roadbed drainage, and provides a drainage structure for improving the stability of a silt stratum roadbed, which comprises a roadbed body, a drainage groove is arranged on the side surface of the roadbed body, two mounting grooves are arranged on the top surface of the roadbed body, the inner walls of the two mounting grooves are fixedly connected with water collecting tanks, and the water collecting tanks are fixedly connected with the drainage grooves. Filter screen plates are connected to the inner walls of the two water collecting tanks in a clamped mode, a mounting seat is fixedly connected to the inner wall of the roadbed body, and a protective sleeve is fixedly connected to the top surface of the mounting seat; the water collecting tank can drain accumulated water at the top of the roadbed, the protective sleeve can protect the water collecting pipe and the water guide pipe in all directions, pipe wall extrusion is avoided, the stability of the pipeli