Inner sleeve arc-shaped hole forming and sunk pipeline lifting and restoring method

Abstract

The invention relates to a concrete drainage pipeline repairing technology, in particular to an inner sleeve arc-shaped hole forming and sunk pipeline lifting and restoring method. The inner sleeve arc-shaped hole forming method comprises the following steps of T1, drilling a straight hole channel, and inserting a steel sleeve into the straight hole channel; T2, inserting a guide pipe into the steel sleeve, and determining the direction in which the hole channel is required to be bent; T3, inserting a steel wire hose into the guide pipe, and conducting punching to form a hole channel with a radian. Based on technical methods for repairing sinking of a concrete drainage pipeline with a small pipe diameter, the novel method is provided, an ingenious sleeve internal bending hole-forming process is adopted, a specially-made grouting pipe can be accurately inserted into the bottom of the sunk pipeline, a high polymer is conveniently injected into the bottom of a damaged position, and the sunk pipeline is lifted and restored by utilizing the expansion force generated when the high polymer material is subjected to diffusion filling and expansion curing at a sinking position so as to achieve the aim of non-excavation repair.

Description

technical field [0001] The invention relates to the repair technology of concrete drainage pipes, in particular to a method for forming holes by arcs of inner casings and a method for resetting and raising pipe subsidence. Background technique [0002] As one of the important infrastructures of the city, the drainage pipe network undertakes functions such as sewage drainage and drainage, and is the "underground lifeline" to ensure the normal operation of urban functions as a whole. my country has a vast territory and complex geological conditions, and silt, silty clay, soft soil, collapsible loess and other soil layers are widely distributed. If drainage pipeline construction is carried out in these areas, if the foundation foundation is not handled properly, it is very easy to cause damage caused by foundation defects. The uneven settlement of the pipeline foundation will lead to subsidence and dislocation of the pipeline interface. If it cannot be dealt with in time, the di...

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Problems solved by technology

However, during the implementation of this method, it is necessary to stop the water and manually enter the pipeline for maintenance work. The construction conditions are difficult and there is a risk of poisoning. Trenchless Repair of Subsidence Diseases of Concrete Drainage Pipelines with Nominal Diameter <800mm)

[0005] The main technical problem now is that there is no corresponding technology that can inject high polymer materials into the bottom of the settlement pipe section without manual entry into the pipeline or without excavation, which has greatly restricted the current modification of the disease situation. Therefore, there is an urgent need Research on a non-excavation repair method suitable for small diameter (nominal diameter of pipe <800mm) concrete drainage pipe subsidence disease

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