A construction method for shallow buried flexible pipeline

A technology of flexible pipelines and construction methods, applied in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc., can solve problems such as easy displacement of pipelines, insufficient backfill compaction between pipeline layers, etc., and achieve high smoothness , Significant social and economic benefits, good anti-aging performance

Active Publication Date: 2016-09-07
JINAN MUNICIPAL ENG CONSTR GRP CO LTD
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Problems solved by technology

[0003] In order to solve the problems in the prior art that the pipeline is easy to shift during the construction of the shallow buried flexible pipeline and the compactness of backfilling the pipe gap and the backfilling compaction between the pipeline layers are not enough, the present invention provides a shallow buried flexible pipeline construction method

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  • A construction method for shallow buried flexible pipeline
  • A construction method for shallow buried flexible pipeline
  • A construction method for shallow buried flexible pipeline

Examples

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Embodiment 1

[0081] A construction method for shallow buried flexible pipelines, the steps are:

[0082] 1) Measure the line, excavate the trench, the trench is trapezoidal.

[0083] 2) Fill the bottom of the trench with a rock salt cushion layer, the thickness of the rock salt cushion layer is 5-7cm; use a plate vibrator to tamping; use a plate vibrator to ram more than four times, and the degree of compaction is more than 95%.

[0084] 3) Install and lay the first layer of pipes on the petrolatum cushion. When installing the first layer of pipes, set up a pipe positioning rack every 5-10 meters to position the pipes to prevent the pipes from shifting and ensure that the pipe spacing is not Change; the first layer of pipes are laid in accordance with the requirements of the drawings, the straightness and the distance between the pipes are adjusted, and then the pipe positioning brackets are used to position the pipelines. The positioning of the pipeline positioning brackets is as follows Figure...

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Abstract

The invention belongs to the field of engineering construction and discloses a shallow-buried flexible pipeline construction method to solve the problems that during shallow-buried flexible pipeline construction in the prior art, pipelines are prone to displacement, and the backfill compaction degree among pipelines and the backfill compaction degree among pipeline layers are not enough. When shallow-buried flexible pipelines are laid in a layered mode and the number of the pipelines in the same layer is large, the pipeline spaces are kept through pipeline positioning racks at the two ends of the pipelines, backfill stone saltpeter is 1-2 cm higher than the pipelines; an improved special tamping tool is used for conducting tamping for three times to guarantee the backfill compaction degree among the pipelines, stone saltpeter is subjected to backfilling again until the top of the stone saltpeter is higher than the pipe tops by 5-7 cm, and a slab tamping tool is used for conducting tamping to ensure the backfill compaction degree among the pipeline layers. By that analogy, accessory pipelines are installed. The method is simple, practical and high in operability, it is guaranteed that the spaces between the shallow flexible pipelines are even, the shallow flexible pipelines are installed straightly and smoothly and backfill is dense, and the engineering quality is improved.

Description

Technical field [0001] The invention relates to the field of engineering construction, in particular to a construction method for shallow buried flexible pipelines. Background technique [0002] The shallow-buried flexible pipeline is constructed according to the traditional construction technology and construction equipment. The pipeline is not fixed and the pipeline is easily displaced during backfilling, resulting in uneven pipeline installation and uneven pipeline spacing; in addition, the pipe spacing and layer spacing are small (usually 50cm). It is difficult for the traditional flat vibrator to vibrate the pipe to ensure the backfill compaction of the pipe gap and the backfill compaction between the pipe layers. Summary of the invention [0003] In order to solve the problems that the pipeline is easily displaced during construction of shallow-buried flexible pipelines in the prior art, and the backfill compaction degree of the pipe gap and the backfill compaction degree be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L1/028
CPCF16L1/028
Inventor 王琨房竹贤贾宁续晶晶韩新占汪龙应要会科孔庆龑
Owner JINAN MUNICIPAL ENG CONSTR GRP CO LTD
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