Construction method for polyvinyl plastic pipeline long distance deep water crossing river

A polyethylene plastic and construction method technology, applied in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc., can solve the problems of unsuitable polyethylene plastic pipe laying and restrictions on the application of polyethylene plastic pipes, etc., to achieve Reliable assurance of project quality and improvement of construction efficiency

Active Publication Date: 2005-03-02
上海水务建设工程有限公司
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  • Abstract
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Problems solved by technology

Although polyethylene plastic pipes have the above advantages, because the material properties of plastic pipes are very different from metal pipes, the existing construction methods for laying metal pipes across the river are not suitable for laying polyethylene plastic pipes. A very mature, high-quality, high-efficiency construction method for laying plastic pipes across the river when the river surface is wide and deep, which greatly limits the application of polyethylene plastic pipes, an excellent pipe material

Method used

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  • Construction method for polyvinyl plastic pipeline long distance deep water crossing river
  • Construction method for polyvinyl plastic pipeline long distance deep water crossing river

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing and embodiment further illustrate construction method of the present invention.

[0027] Embodiment The construction site is located in the tidal section, with strong wind, strong waves, fast flow, and changeable terrain. The characteristics of the river course are: the width is 1200 meters, the lowest elevation of the riverbed is -9.11m, the average high tide elevation is 4.81m, and the average low tide is 1.01 m, the average tidal range of ebb and flow is 3.8 meters, the maximum water depth is 14 meters, the speed of high tide is 0.8 m / s, and the speed of ebb tide is 1.3 m / s. The geology is mainly medium sand. The pipeline to be laid is a polyethylene plastic water supply pipeline with a diameter of 630mm.

[0028] The construction method and steps of this embodiment are as follows.

[0029] a. According to the design requirements, first use GPS positioning system, total station and depth sounder to recheck and measure t...

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Abstract

The invention relates to long distance and deep water construction method of polythene plastic pipes. The method includes following steps: pipe position measuring and sampling, embeds wire protecting piles, forms construction control wire; the localization of constructing ship; groove digging; underwater monitoring and groove amendment; pipes connecting; arranges weight cement and floating ball on the pipe; the pipe arrives the position and is fixed; pipe detection and process underwater; groove filling; pipe pressure detecting; pipe rinsing and sterilization. The invention uses the beneficial character of the plastic pipe effectively, thus the quality of the project is more reliable.

Description

technical field [0001] The invention relates to a construction method for pipelines crossing rivers, in particular to a construction method for long-distance deep-water crossing rivers of polyethylene plastic pipelines. Background technique [0002] The laying of pipelines is mostly done on land, and the construction of long-distance deep-water cross-river construction is much more difficult than that on land due to the wide variety of river characteristics, geological conditions, and hydrometeorological conditions. For cross-river pipeline construction, appropriate methods shall be adopted according to the actual conditions of the construction site. [0003] Existing cross-river water supply pipelines generally adopt metal pipes, and plastic pipes are seldom used, especially in rivers with wide and deep rivers. Polyethylene plastic pipe is an emerging water supply pipe, which has the advantages of corrosion resistance, long service life, low cost, and small water resistanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/16
Inventor 杨祖光陶伟元魏思平张青春朱普霞蔡燕飞
Owner 上海水务建设工程有限公司
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