Double-pushing PE pipe excavation-free underground pipeline repairing method

• Main Authors: XUAN SHOUHUA, PENG HUANBAO, WEI SHIQUAN, KAIMAE TADASHI, ZHU QINGLONG
• Format: Patent
• Language: Chinese; English
• Published: 31.03.2023
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

The invention discloses a double-pushing PE pipe excavation-free underground pipeline repairing method, and relates to the technical field of municipal engineering, and the method comprises the following steps: S1, pretreating the interior of an underground pipeline; s2, hydraulic pipe jacking equipment is installed; s3, the pipe breaking head is installed in the underground pipeline, and the PE pipeline is pre-installed to the pipe breaking head; s4, a push rod is installed, hydraulic pipe jacking equipment is used for jacking the push rod to drive a pipe breaking head to gradually enter the underground pipeline, the underground pipeline is broken through the pipe breaking head, and the PE pipeline can enter the underground pipeline along with the pipe breaking head; the hydraulic pipe jacking equipment acts on a pressure-bearing steel plate, the hydraulic pipe jacking equipment is jacked, after a pipe breaking head enters an underground pipeline by a certain distance, one section of PE pipeline is jacked by