Construction method of circulating water glass fiber reinforced plastic pipeline

Abstract

The invention discloses a circulating water fiberglass pipeline construction method. The circulating water fiberglass pipeline construction method comprises following steps of firstly, construction preparation, wherein a base material is prepared; secondly, pipeline excavating dewatering, wherein according to the condition of soil, pipeline sloping is carried out, 600 mm intervals are reserved onthe two sides, a pipeline bottom ditch bed is leveled through a gradienter, and sand bags are laid on the two sides; thirdly, pipeline mounting, wherein a pipeline bottom cushion is laid on the bottomof the pipeline, an anchor block is mounted, after mounting, the pipeline is laid, finally, pipeline connection is carried out, and after pipeline connection is carried out, water pressure test is carried out; fourthly, pipeline backfill, wherein after the pipeline is connected, pipeline backfill is carried out right now, tamping is carried out one time every time 600 mm backfilling operation iscarried out, when backfilling to the pipeline top is carried out, the water pressure test is carried out, after qualification, continuous backfilling and tamping is carried out until the terrace is backfilled and tamped; and fifthly, whole pipeline water pressure test, wherein after the whole pipeline is mounted, a hand shaking hydraulic test pump or power hydraulic test pump is used for carryingout whole pipeline water pressure test. The method is low in cost, the pipeline is resistant to corrosion, and the performance is stable.

Description

Technical field: [0001] The invention relates to a construction method of a pipeline, in particular to a construction method of a circulating water glass fiber reinforced plastic pipeline. Background technique: [0002] The circulating water system is the most basic system of the power station project, which is directly related to the normal operation of the power station system. In the power stations near the sea and inland power stations, the pipe material of the circulating water system gradually develops to FRP pipes, and non-metallic pipes such as FRP have low cost of ownership. , the advantages of simple laying process and stable performance gradually occupy the buried pipeline market, especially in waterside power station projects, which are widely used, but the installation process of FRP pipelines is very important. In the construction process, we must pay full attention to all links in order to ensure the system. Normal operation is currently based on the relevant ...

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Problems solved by technology

[0002] The circulating water system is the most basic system of the power station project, which is directly related to the normal operation of the power station system. In the power stations near the sea and inland power stations, the pipe material of the circulating water system gradually develops to FRP pipes, and non-metallic pipes such as FRP have low cost of ownership. , the advantages of simple laying process and stable performance gradually occupy the buried pipeline market, especially in waterside power station projects, which are widely used, but the installation process of FRP pipelines is very important. In the construction process, we must pay full attention to all links in order to ensure the system. Normal operation is currently based on the relevant regulations and specifications of thermal power plant construction projects. There are no installation specification requirements and quality standards for large-diameter circulating water FRP pipes. The site can only use the manufacturer's technical requirements for bonding and installation. Due to the distance from the sea Nearby, the groundwater level is high, and the circulating water pipeline has repeatedly floated during the installation process, and internal leakage occurred in many places during the hydraulic test, which seriously affects the laying and operation of large-diameter FRP pipelines

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