Method of replacing and repairing sewage pipes without excavation

Abstract

The invention relates to a method for non-excavation replacement and repair of sewage pipelines, which includes excavating a well to the depth of the pipeline to be connected, removing the soil at the missing pipeline, leaving a transport space from the well to the pipeline to be connected, and preparing more The section has an inner support with a hollow channel, and the inner support is pushed through the delivery space to the position of the pipe to be connected in turn, the hollow channels of two adjacent inner supports are butted, and the hollow channel of the inner support extends from the shaft to the pipeline to be connected. The new pipeline is transported to the pipeline to be connected through the hollow channel of the inner support, the new pipeline is connected to the pipeline to be connected, the soil is backfilled, the shaft is repaired, and the repair is completed. The invention completes non-excavation repairing of pipelines under the condition of limited road surface space. Compared with large-scale equipment, the construction noise is small, the impact on the surrounding environment is small, and road collapse and settlement are effectively avoided; the damage to the foundation of surrounding buildings is reduced. It solves the interference of traditional excavation construction on residents' lives, and has high social and economic effects.

Description

technical field [0001] The invention relates to a method for replacing and repairing sewage pipes without excavation. Background technique [0002] At present, with the increasing frequency of road construction, it is very common for equipment to cut off the sewage pipe network under the road. In the prior art, through excavation and repair, manual or excavator breaks and excavates the soil, digs out the damaged pipeline (or digs out the space where the pipeline is missing), paves a sand cushion, lays a new pipeline, and wraps it in concrete After curing, backfill the soil to complete the restoration. However, when the road section is located in a downtown area or an area with high traffic pressure, and there is a situation where excavation cannot be carried out, if the sewage pipe is damaged or the actual sewage pipe is too long, it will not be possible to effectively complete the repair of the pipe; and once the pipe is lost , It may also cause the road surface to collap...

AI Technical Summary

Problems solved by technology

However, when the road section is located in a downtown area or an area with high traffic pressure, and there is a situation where excavation cannot be carried out, if the sewage pipe is damaged or the actual sewage pipe is too long, it will not be possible to effectively complete the repair of the pipe; and once the pipe is lost , may also cause the road surface to collapse, causing a great safety hazard

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