Protective framework for improving safety performance of diversion tunnel structure

The invention belongs to the technical field of diversion tunnel structure safety and stability, and particularly relates to a protection framework for improving the safety performance of a diversion tunnel structure, which comprises a pipeline main body, an internal tensioning steel ring layer and an epoxy resin layer, and is mainly used for the pipeline main body formed by splicing prefabricated reinforced concrete segments in a diversion tunnel; the structure is unique and novel, the stabilizing effect is good, the pipeline is formed by splicing a plurality of hexagonal prefabricated reinforced concrete pipe pieces, the epoxy resin layer is added between the pipeline and the internal tensioning steel ring layer to serve as a binding agent, the epoxy resin layer is filled in a gap between the internal tensioning steel ring layer and the pipeline, the epoxy resin layer can also play a certain buffering role in the internal tensioning steel ring, and therefore the pipeline is more stable. And the situation th