Arch dam topography defect strengthening structure

The invention discloses a hydraulic and hydro-power engineering structure, and particularly relates to an arch dam topography defect strengthening structure. The arch dam topography defect strengthening structure is suitable for different working conditions and comprises an arch dam, a foundation building surface rock body, foundation building face insertion ribs and a downstream concrete strengthening attaching foot. The edge of the arch dam is combined with the foundation building surface rock body. The downstream concrete strengthening attaching foot extends on the foundation building surface rock body along the edge of the arch dam. The downstream concrete strengthening attaching foot is located on the downstream side of the arch dam. The downstream concrete strengthening attaching foot is combined with the foundation building surface rock body through the foundation building face insertion ribs. According to the engineering structure, the downstream concrete strengthening attaching foot is adopted, and the arch dam stress conditions with topography defects can be effectively improved through the downstream concrete strengthening attaching foot. The downstream concrete strengthening attaching foot is combined with the foundation building surface rock body through the foundation building face insertion ribs; a contact grouting layer is arranged between the foundation building surface rock body and the downstream concrete strengthening attaching foot so that the foundation building surface rock body and the downstream concrete strengthening attaching foot can be tightly combined.