Trenchless rehabilitation device for disconnects on large-diameter concrete drainage pipe and method thereof

A trenchless rehabilitation device for disconnects on large-diameter concrete drainage pipe, comprising:

• a pipe CCTV (closed-circuit television), a water blocking device, a lining repair permanent structure, and a grouting device, wherein:
• the pipe CCTV is configured to determine whether there is a disconnection disease in the pipeline and determine a disconnected position of a pipeline;
• the water blocking device is configured to block water to form a working space, comprising:
• a water stop air bag and an air compressor connected to the water stop air bag, and the water stop air bag is provided on an upstream of the disconnected position;
• the inner lining repair permanent structure is configured to repair the disconnection disease of the pipeline, comprising:
• a rubber seal lining short pipe and a plurality of expanded round fixed steel plates installed on an internal wall of the rubber sealed lining short pipe;
• wherein the expanded round fixed steel plates are annular structures;
• the plurality of the expanded round fixed steel plates are fixedly provided in an annular array on the internal wall of the rubber seal lining short pipe;
• grouting holes are provided in a center of the expanded round fixed steel plates, and the grouting holes are for polymer grouting a periphery of a disconnected pipeline and soil void;
• two circumferential ends of the expanded round fixed steel plates are respectively provided with a plurality of bolt holes for fixing to the internal wall of the rubber seal lining short pipe through expansion screws;
• and
• the grouting equipment is configured to insert the grouting holes of the pipeline to perform polymer grouting on the disconnected pipeline and the void soil.