Non-excavation overall repairing method for concrete drainage pipe containing various diseases

Abstract

The invention discloses a non-excavation overall repairing method for a concrete drainage pipe containing various diseases. The non-excavation overall repairing method comprises the following steps that S1, a steel ring is precast according to the diseased pipe internal diameter, and grouting holes are reserved in the steel ring; S2, the steel ring is loaded at the diseased position in the pipe, so that the steel ring is tightly attached to the inner wall of the pipe to form a reinforcing ring; S3, the grouting holes of the proper quantity are selected according to the distributing situation of the subsidence disease, drilling is conducted on the subsidence position in the pipe, grouting pipes are inserted, grouting is conducted on the subsidence part slowly through a high polymer groutingsystem, close observation is conducted on the pipe lifting situation, and the grouting pipes are removed until the pipe is lifted to the desired level; and S4, a lining pipe is pulled into the pipe,so that the lining pipe is tightly attached to the steel ring and the pipe wall near the steel ring, curing is conducted on the lining pipe, and the lining pipe is tightly attached to the pipe wall and wraps the steel ring. By means of the non-excavation overall repairing method, a variety of pipe diseases such as subsidence, corrosion and cracking can be simultaneously repaired, and the problem of repair influences due to pipe cracking caused by direct grouting in the prior art is further solved.

Description

technical field [0001] The invention belongs to the technical field of pipeline repair, and in particular relates to a non-excavation overall repair method for concrete drainage pipelines containing various diseases. Background technique [0002] As the "underground artery" of modern cities, urban underground pipe network undertakes important responsibilities such as sewage drainage and drainage, and plays a pivotal role in the daily life of urban residents. With the acceleration of my country's urbanization process, the scale of urban underground pipe network construction is also increasing. As of 2016, my country's water supply, gas, drainage and heat pipeline construction mileage has exceeded 2.12 million kilometers. However, as the service life of the pipeline continues to increase, the pipeline is seriously aged and in disrepair, and various diseases such as cracking, corrosion, and subsidence coexist. If they cannot be dealt with in time, it will lead to cracks and sub...

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a non-excavation overall repair method for concrete drainage pipes containing various diseases, aiming to solve the problem that the existing pipe repair methods are easy to break the pipe during grouting, which leads to the problem that the disease cannot be effectively repaired

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