A construction method of anti-seepage and anti-corrosion sewage pipeline segment lining based on shield method

A technology for sewage pipelines and shield segments, which is applied in the directions of pipes/pipe joints/fittings, pipe components, and mechanical equipment. Anti-corrosion performance, increase the effective utilization area, the effect of economical construction technology
CN105697922BActive Publication Date: 2018-12-07HOHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HOHAI UNIV
Publication Date
2018-12-07

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Abstract

The invention relates to a construction method based on a shield method for an anti-seepage anticorrosion sewage pipe segment lining. The method comprises the following steps that (a) holes in shield segments and gaps between the segments are blocked through epoxy resin; (b) the inner cambered faces of the shield segments are polished to expose inner pores of the shield segments; and (c) polyaniline / epoxy resin mixed coating is sprayed on the inner cambered faces of the shield segments and cured to form protecting coatings. Through the construction steps of epoxy resin blocking, shield segment inner cambered face polishing and protecting coating forming through curing, the construction process is more economical, simpler and rapider, the effective utilized area in pipes is increased, flow resistance of the coatings to sewage is smaller, and the pollution discharge speed is increased. In addition, the protecting coatings have excellent film-forming performance and corrosion resistance and can effectively resist corrosion of acid, alkali and salts in the sewage pipes to the reinforced concrete segments.
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Description

technical field

[0001] The invention belongs to the field of building construction, and relates to a construction method for a sewage pipeline segment lining, in particular to a construction method for an anti-seepage and anticorrosion sewage pipeline segment lining based on a shield method, which is used for underground sewage pipe network engineering construction. Background technique

[0002] With the increasing perfection of shield tunneling technology (ie, shield method), its application in sewage pipelines is increasing. In the current sewer facilities in our cities, both pipes and sewage treatment are concrete structures. However, because the sewage in the sewage tunnel contains a large amount of salt solution, heavy metal solution, CH 4 , CO 2 and H 2 Chemical components such as S have a certain erosive effect on concrete and steel bars, which will affect the normal service life of the tunnel. Therefore, it is very important to study how to prevent these structu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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