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Shallow-buried flexible pipeline construction method

A technology of flexible pipelines and construction methods, applied in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc., can solve the problems of insufficient backfill compaction between pipeline layers and easy displacement of pipelines, etc., achieving significant social Economic benefit, high finish and strong corrosion resistance

Active Publication Date: 2015-06-17
JINAN MUNICIPAL ENG CONSTR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Shallow-buried flexible pipeline construction method
  • Shallow-buried flexible pipeline construction method
  • Shallow-buried flexible pipeline construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] A construction method for a shallow buried flexible pipeline, the steps of which are:

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

[0083] 2) Backfill the pyrite cushion layer to the bottom of the trench, the thickness of the pyrex cushion layer is 5-7cm; tamp it with a flat vibrator; use a flat vibrator to tamp it more than four times, and the compaction degree is above 95%.

[0084] 3) Install and lay the first layer of pipes on the lime pad. When installing the first layer of pipes, set a pipe positioning frame every 5-10 meters to position the pipes to prevent the pipes from shifting and ensure that the distance between the pipes is consistent. Change; the first layer of pipes is laid according to the requirements of the drawing, adjust the straightness and pipe spacing, and then use the pipe positioning frame to position each pipe. The pipe positioning frame positions the pipes as follows Figure 5 shown.

[0085]...

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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 a shallow-buried flexible pipeline. Background technique [0002] Shallow-buried flexible pipelines are constructed according to traditional construction techniques and construction machines. Without fixing the pipelines, the pipelines are likely to be displaced during backfilling, resulting in uneven pipeline installation and uneven pipeline spacing; It is difficult to ensure the backfill compactness of the pipe gap and the backfill compaction of the pipe layer by the traditional flat vibrator vibrator. Contents of the invention [0003] In order to solve the problems in the prior art that the pipeline is easily displaced during the construction of the shallow-buried flexible pipeline and the compaction degree of the backfill in the pipe gap and the backfill compaction degree between the pipeline layers are insufficient, the present invention p...

Claims

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Application Information

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Patent Type & Authority Applications(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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