Buffering energy absorber of tunnel damping layer and manufacturing method

The invention belongs to the technical field of tunnel construction, and particularly relates to a tunnel damping layer buffering energy absorber and a manufacturing method. A PE pipe, a plug and a foam filling block are arranged; the foam concrete is sealed inside through the PE pipe and the plug, so that tunnel crack water can be prevented from entering and damaging the foam concrete; the space between the foam concrete and the end of the PE pipe is filled with the foam filling block, so that the probability that the foam concrete shakes in the PE pipe is reduced, and the compaction degree of the solidified foam concrete is improved; a frame structure made of reinforcing steel bars is adopted on the surface of a tunnel primary support to serve as a bearing structure, the manufactured buffer energy absorber is directly installed, and construction and installation of workers are facilitated. 本发明属于隧道施工技术领域，具体的说是一种隧道减震层缓冲吸能器及制作方法；通过设置PE管、堵头和泡沫填充块；通过PE管和堵头将泡沫混凝土密封在内部，可以防止隧道裂隙水进入，破坏泡沫混凝土；通过泡沫填充块将泡沫混凝土与PE管端头之间的空间填