Disassembly-free modular lining plate

The utility model relates to a disassembly-free modular lining plate which comprises a prefabricated lining plate frame, underwater non-dispersible concrete is poured in the prefabricated lining plate frame, and the prefabricated lining plate frame comprises symmetrically-arranged water retaining side plates, a plurality of connecting rod assemblies installed between the water retaining side plates and a plugging cover plate. When an underwater damaged lining plate needs to be repaired, a worker connects the water retaining side plates together through the connecting rod assembly, then connects the plugging cover plate and the water retaining side plates together through the positioning connecting plate, then lifts the whole prefabricated lining plate frame into water, and then pours underwater non-dispersible concrete into the prefabricated lining plate frame, so that the underwater damaged lining plate is repaired. The prefabricated lining plate frame and underwater non-dispersible concrete form a whole, so