The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 2022
Filed:
Apr. 27, 2020
Infrastructure Renewal Institute of Southern China, Guangdong, CN;
Welead Infrastructure Engineering Technology (Zhengzhou), Ltd., Henan, CN;
Fuming Wang, Guangdong, CN;
Hongyuan Fang, Guangdong, CN;
Peng Zhao, Henan, CN;
Yanhui Pan, Henan, CN;
Bin Li, Henan, CN;
Hang He, Henan, CN;
Infrastructure Renewal Institute of Southern China, Guangdong, CN;
WELEAD Infrastructure Engineering Technology (Zhengzhou), Ltd., Henan, CN;
Abstract
A trenchless integrative repair method includes steps of: S1, pre-casting steel rings according to an internal diameter of a defect pipeline, and forming grouting holes in the steel rings; S2, loading the steel rings to a defect position inside the pipeline, and fitting the steel rings to an internal wall of the pipeline to form reinforcing rings; S3, selecting a number of the grouting holes according to subsidence distribution; drilling a hole in the pipeline to reach a subsidence position and inserting a grouting pipe; steadily grouting the subsidence position with a polymer grouting system, and observing a lift condition of the pipeline; removing the grouting pipe after the pipeline is lifted to a predetermined level; and S4, pulling a lining pipe into the pipeline, and fitting the lining pipe to the steel rings and pipeline walls adjacent to the steel rings; curing the lining pipe.