Leakage repair construction method for underground drainage tube

Abstract

The invention relates to the technical field of drainage tube repair, and particularly relates to a leakage repair construction method for an underground drainage tube. The leakage repair constructionmethod comprises the following steps: 1) performing flaw detection on the underground drainage tube; step 2) excavating ground which corresponds to a leakage part of the underground drainage tube until a tube body leakage part is exposed; step 3) coating a liquid-state pipeline repair composition on the tube body leakage part; step 4) introducing water into the underground drainage tube after thepipeline repair composition is cured, and detecting whether leakage exists or not; step 5) if leakage still exits, re-coating the liquid-state pipeline repair composition to repair; and step 6) afterunderground drainage tube repair is accomplished, backfilling composite soil into an excavated pit to repair a road surface, wherein the composite soil comprises rubber particles and soil. The leakage repair construction method has the effects of absorbing vibration impact by the rubber particles, not easily re-damaging the repaired underground drainage tube due to physical impact, and effectively reducing repair frequency.

Description

technical field [0001] The invention relates to the technical field of drainage pipe repair, in particular to a construction method for underground drainage pipe leakage repair. Background technique [0002] At present, with the development of human civilization, people use water resources more and more frequently, resulting in a large amount of water supply and drainage, which needs to be diverted through underground drainage pipes, and centralized drainage is used to ensure the drainage effect and reduce drainage. The situation that has an impact on people's living environment in the process. [0003] Existing underground drainage pipes usually include plastic pipes, metal pipes and concrete pipes. When underground drainage pipes are buried underground for a long time, the plastic pipes will degrade, the metal pipes will corrode, and the concrete pipes will experience stress concentration and cracking. Damage to underground drainage pipes leads to leakage, so underground ...

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Problems solved by technology

[0006] However, the connection surface between the epoxy resin and the leakage of the underground drainage pipe will become a weak point. Since the underground drainage pipe is buried underground, the operation of ground vehicles and the movement of people will cause vibration and impact, and the impact of the impact force on the weak point will easily lead to underground drainage. The pipe is damaged again at the repaired connection surface, so that the leakage occurs again, resulting in a higher frequency of repairs, so there is room for improvement

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