Backfill protective structure and protection method for high voltage electric power pipeline at top of deep foundation pit

A high-voltage power and protection structure technology is applied in the field of backfill protection structures for high-voltage power pipelines at the top of deep foundation pits, and can solve problems such as lack of reliable protection of pipelines, affecting the use safety and safe service life of original pipelines, and damage to original pipelines.

Pending Publication Date: 2019-06-14
JINAN RAILWAY TRANSPORT GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method lacks reliable protection for the pipeline, especially the first tamping or rolling, which is easy to cause damage to the original pipeline, affecting the use safety and safe

Method used

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  • Backfill protective structure and protection method for high voltage electric power pipeline at top of deep foundation pit
  • Backfill protective structure and protection method for high voltage electric power pipeline at top of deep foundation pit
  • Backfill protective structure and protection method for high voltage electric power pipeline at top of deep foundation pit

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Experimental program
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Effect test

Embodiment 1

[0027] In one or more embodiments, a backfill protection structure for high-voltage power pipelines on the top of a deep foundation pit is disclosed. During earthwork backfilling, the high-voltage power pipelines of the upper-span foundation pit structure are protected. Spatial relations, adopt different protection schemes.

[0028] Among them, earthwork backfilling means that the pipelines located within the scope of the excavation of the foundation pit are protected in situ after foundation pit excavation, structural construction, and waterproof construction are completed, followed by earthwork backfilling to restore the original landform and ecology.

[0029] During the earthwork backfilling process, according to the different spatial states of the bottom, side and top of the high-voltage power pipeline, the distance from the completed structure, the use function of the ground after backfilling, etc., different protection schemes are adopted to ensure the operation of the high-vo...

Embodiment 2

[0046] In one or more embodiments, the backfill construction process of the high-voltage power pipeline on the top of the deep foundation pit is disclosed, such as figure 1 As shown, including the following steps:

[0047] The roof of the structure is waterproof and concrete protective layer is poured. After the main construction of the underground structure is completed, the waterproof construction of the roof and the waterproof concrete protective layer are carried out;

[0048] Backfill sand cushion 1 in the lower part of the pipeline, and backfill sand cushion 1 in the lower part of the pipeline according to the design requirements to complete the first layer of protection for the pipeline;

[0049] Fill cement chip layer 2 on the upper part of the pipeline, and backfill cement chip layer 2 on the upper part of the pipeline according to the design requirements to complete the second layer of protection for the pipeline;

[0050] Cushion and waterproof layer construction, pour a con...

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Abstract

The invention discloses a backfill protective structure and a protection method for a high voltage electric power pipeline at the top of a deep foundation pit. The backfill protective structure comprises a sand cushion, a cement aggregate chip layer and a reinforced concrete cover plate; the sand cushion is arranged below the high voltage electric power pipeline, and the cement aggregate chip layer is filled in a set range above the high voltage electric power pipeline; and the reinforced concrete cover plate is poured above the cement aggregate chip layer and in a range of covering the two sides of the high voltage electric power pipeline for a set distance. The protective structure disclosed by the invention has the beneficial effects that specific backfill protective measures are adopted according to structural styles of different structures and spatial position relationships between the tops of the structures and a pipeline, and the backfill protection problem on the high voltage electric power pipeline protected in situ and difficult to move and change during municipal engineering constructions such as urban rail transit construction and comprehensive development of underground space is appropriately solved.

Description

Technical field [0001] The invention relates to the technical field of municipal engineering construction such as urban rail transit construction and comprehensive development of underground space, and in particular to a backfill protection structure and method for high-voltage power pipelines on top of deep foundation pits. Background technique [0002] The statements in this section merely provide background information related to the present invention, and do not necessarily constitute prior art. [0003] In the construction of municipal projects such as the excavation of deep foundation pits of urban rail transit stations and auxiliary facilities, and the comprehensive development of underground space, various pipelines are often difficult to relocate. Generally, in-situ protection measures are adopted. After the structure is completed and passed the inspection and acceptance, the original protected pipeline position is backfilled. Often due to the small distance between the pi...

Claims

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Application Information

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IPC IPC(8): H02G9/06E02D29/045
Inventor 周建国孙连勇李春王永军徐勇刘迎展张曦
Owner JINAN RAILWAY TRANSPORT GRP CO LTD
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