Prefabricated pipeline concrete buttress structure

The utility model provides a prefabricated pipeline concrete buttress structure. The prefabricated pipeline concrete buttress structure comprises a pipeline buttress, an elbow pipeline and an external pipeline. The pipeline buttress is formed by pouring concrete, the elbow pipeline is embedded in the pipeline buttress, pipeline rabbets are arranged at the two ends of the elbow pipeline, the external pipelines are arranged at the two ends of the elbow pipeline and connected with the pipeline rabbets, sealing rings are arranged at the joints of the external pipelines and the pipeline rabbets, and sealing layers are arranged on the outer sides of the joints of the external pipelines and the elbow pipeline. A pipeline fixing circular hoop used for fixing the position of the external pipeline is arranged on the outer side of the external pipeline, and the pipeline fixing circular hoop is arranged at the position close to the connecting position of the external pipeline and the elbow pipeline. The pipeline rabbets