Cutting slope platform ditch integrated excavation-free structure and construction method

The invention discloses a cutting slope platform ditch integrated excavation-free structure which comprises a terrace, a layer of hardened platform is arranged on the surface of the terrace, a continuous protection foot is arranged on the surface, close to a slope foot, of the terrace, and a platform prefabricated block water blocking ridge with openings formed in a segmented mode is arranged on the surface, away from a slope, of the terrace. The platform prefabricated block water blocking ridges and the protection feet are hardened with the hardened platform to form a whole, the platform prefabricated block water blocking ridges and the protection feet are higher than the surface of the hardened platform, and the parts, higher than the surface of the hardened platform, of the platform prefabricated block water blocking ridges and the protection feet and the hardened platform form platform ditches. The invention further provides a construction method of the cutting slope platform ditch integrated excavation-f