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Protective method of pipelines in natural gas pipeline full-section excavation construction

A natural gas pipeline, full-section technology, used in excavation, infrastructure engineering, construction, etc., to solve the problem that the pipeline cannot be moved casually.

Inactive Publication Date: 2012-08-29
CHINA CONSTR SEVENTH ENG DIV SHANGHAI CORP
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, some pipelines cannot be moved casually, so effective protection measures must be taken for pipelines to ensure that large-diameter pipelines will not be affected by construction during construction, so as not to cause settlement, resulting in displacement or even cracks in the pipeline

Method used

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  • Protective method of pipelines in natural gas pipeline full-section excavation construction
  • Protective method of pipelines in natural gas pipeline full-section excavation construction
  • Protective method of pipelines in natural gas pipeline full-section excavation construction

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Embodiment Construction

[0042] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0043] see figure 1 , the invention provides a kind of natural gas pipeline full-section excavation construction to pipeline protection method, comprises the following steps:

[0044] (1) Make bored cast-in-place piles on both sides of the natural gas pipeline according to the SWM construction method. The bored cast-in-situ piles are arranged on both sides outside the foundation pit enclosure structure, and the diameter of the bored cast-in-place piles is 800mm.

[0045] (2) Make concrete caps on bored piles. The width of the concrete cap is 1200mm, the height is 1000mm, and the distance between the bottom surface of the concrete cap and the top of the natural gas pipe is 500mm.

[0046] (3) Set up the Belle frame on the concrete cap. The Belle rack is a four-row structure Belle rack.

[0047] (4) Use wooden squares and thick steel plates to form...

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Abstract

The invention relates to a protective method of pipelines in natural gas pipeline full-section excavation construction, which comprises the following steps: manufacturing cast-in-situ bored piles at two sides of a natural gas pipeline in accordance with SWM pile; manufacturing concrete cushion cap on the cast-in-situ bored piles; arranging bailey brackets on the concrete cushion cap; forming a suspender structure below the pipelines by utilizing wood beams and thick steel plates; and installing an enclosed construction around the pipelines by utilizing templates in a pipeline excavation section and filling fine sand for protection. The protective method of the pipelines in the invention is a protective method designed by aiming at the fact that the pipelines are not moved. The protective method for the pipelines in the natural gas pipeline full-section excavation construction in the invention can safely and reliably ensure the natural gas pipeline not to be affected in the construction process, thereby preventing the pipelines from generating displacement even and cracks.

Description

technical field [0001] The invention relates to a method for protecting a pipeline, in particular to a method for protecting a pipeline during full-section excavation of a natural gas pipeline. Background technique [0002] There are often important large-diameter pipelines passing through the construction site. In the past, when this situation was encountered during the construction process, pipeline displacement was often adopted to ensure pipeline safety. However, some pipelines cannot be moved casually, so effective protection measures must be taken for pipelines to ensure that large-diameter pipelines will not be affected by construction during construction, so as to avoid settlement, displacement or even cracks in pipelines. [0003] In view of this, seeking a method for protecting natural gas pipelines through full-section excavation has become a goal pursued by technicians in this field. Contents of the invention [0004] The task of the present invention is to pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/00
Inventor 王伟民周爱明肖必建丁齐国张少波
Owner CHINA CONSTR SEVENTH ENG DIV SHANGHAI CORP
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