Non-excavation repairing method for local deformation of small-caliber HDPE pipeline of road

The invention provides a road small-caliber HDPE (high-density polyethylene) pipeline local deformation non-excavation repair method, which belongs to the technical field of road construction and comprises the following steps: accurately positioning the local deformation position of a pipeline by adopting a CCTV detection system; penetrating a traction rope between the two inspection wells; the distance is calculated according to the damaged position, and the special circular jack is pulled to the deformed position through a pulling rope; step-by-step jacking is conducted on the pipeline through CCTV monitoring, and after jacking is conducted to the designed position, fixing is conducted for a period of time till backfill sand is stabilized; cutting the composite glass fiber cloth according to the deformation length, mixing the resin in proportion, and uniformly infiltrating the glass fiber cloth; winding a plastic protective film on the surface of the repairing air bag, and winding the glass fiber cloth infi