Construction method for connecting new and old sewage pipes during sewage pipe shifting transformation

Abstract

The invention discloses a construction method for connecting new and old sewage pipes during sewage pipe shifting transformation. The construction method includes carrying out construction for connecting side surface PCCP (prestressed concrete cylinder pipes) with original three-pollution communicating pipes and connecting PCCP with three-pollution communicating pipes of square canals and carryingout construction for connecting the adjacent PCCP with inspection wells. Section construction can be simultaneously carried out or can be carried out step by step. The construction method has the advantages that non-intersection zones, the inspection wells and package wells are constructed in integral foundation pits at first according to actual plane intersection conditions of the new and old three-pollution communicating pipes, then cutover construction processes for the new and old three-pollution communicating pipes are further carried out, the construction method includes simple and convenient construction processes and is suitable for popularization and application, and the obtained new and old sewage pipes are stable in connection structure.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a construction method for connecting new and old sewage pipes in sewage pipe displacement reconstruction with simple structure, convenient construction and good safety performance. Background technique [0002] For fully enclosed underground construction sections, it is sometimes necessary to relocate the three-sewage connecting pipe, and the local new three-sewage connecting pipe needs to be connected to the old three-sewage connecting pipe. However, due to the different heights of the local connecting pipes, even the connecting pipe The shape of the pipes is different, and the depth of the pipeline is deep, and the sewage is continuously discharged, which brings major problems to the construction progress and greatly affects the construction progress and quality. Contents of the invention [0003] In view of the above-mentioned problems in the prior ...

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Problems solved by technology

[0002] For fully enclosed underground construction sections, it is sometimes necessary to relocate the three-sewage connecting pipe, and the local new three-sewage connecting pipe needs to be connected to the old three-sewage connecting pipe. However, due to the different heights of the local connecting pipes, even the connecting pipe The shapes of the pipes are different, and the depth of the pipe covering soil is deep, and the sewage is discharged continuously, which brings major problems to the construction progress and greatly affects the construction progress and quality.

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