Sponge city ground rapid drainage system

The utility model discloses a rapid drainage system for the ground of a sponge city. Ground surface soil layer, a foundation layer is laid in the middle of the ground surface soil layer top layer. A concrete road is laid on the side, away from the surface soil layer, of the foundation layer. Curbstone bricks are connected to two sides of the concrete road; a drainage through hole is formed in oneside of the curbstone brick; a circular groove is formed in the middle of the inner wall bottom surface of the drainage through hole; a sliding hole is formed in the middle of the top surface of the curbstone brick; a trash rack is connected into the sliding hole in a sliding manner; the bottom of the trash rack is fixedly connected with a buoy; drainage ditches are formed in the two sides of theground surface soil layer, hardened layers are laid on the surfaces of the drainage ditches, water permeable holes are formed in the surfaces of the hardened layers, supporting covers are erected at the tops of the drainage di