Water pool expansion joint water leakage repairing method

Abstract

The invention discloses a water pool expansion joint water leakage repairing method, which is characterized by comprising the following steps that (A) a soil layer at the back water side of an expansion joint is cleared; (B) temporary sealing and blocking is carried out, asbestos hemp threads are sealed and plugged at the water seepage part of the expansion joint, then, a needle tube is used for injecting water foaming polyurethane, and the water leakage part is temporarily sealed and blocked to the state without water leakage; (C) support convex heads are cast; (D) wall posts are cast; (E) filing is carried out: a sealing plate is arranged at the bottom of a gap of the two wall posts in a sealed way, then, flowing sealing glue is filled in a gap formed above the sealing plate, and a first sealing glue sandwich layer is formed; (F) the soil layer at the back water side of the expansion joint is filled back. The water pool expansion joint water leakage repairing method has the advantages that the water leakage is sealed and plugged, the deformation quantity of the original design is remained, the production halt is not needed, the work period is short, the cost is low, and the water pool expansion joint water leakage repairing method can be widely applied to sewage plant buildings and water-failure-free repairing of large-scale concrete pipelines.

Description

technical field [0001] The invention belongs to the technical field of expansion joint repair, and in particular relates to a water leakage repair method for expansion joints of pools. Background technique [0002] Most of the process structures of sewage treatment plants, large concrete pipes and general pools use embedded rubber waterstop expansion joints to deal with deformation caused by settlement and temperature. However, as the use time continues to increase, the rubber waterstop gradually oxidizes and cracks, or cracks due to large deformation, resulting in leakage of the pool body or pipeline. At present, the general repair method is to remove the outsourcing structure and replace the rubber waterstop and then re-cast; or add an externally attached rubber waterstop on the upstream surface; or directly pour with cement or waterstop glue. However, in several ways, the water body in the pool or pipeline must be emptied before construction and repair can be carried out...

AI Technical Summary

Problems solved by technology

However, in several ways, the water body in the pool or pipeline must be emptied before construction and repair can be carried out, and the construction period is long, and the economic cost and environmental cost of water stop maintenance are extremely high, especially for the structures of sewage treatment plants, etc. They are all pollutants. If they are emptied, they will affect the environment, and new pollutants will enter during the outage period and cannot be treated in time, causing further pollution and affecting the environment.

[0003] Insufficient existing technology: it is necessary to empty the water body in the pool or pipeline, stop its normal operation, and carry out construction repairs, which will increase economic costs and environmental costs

Images