Underground pipeline protective construction method for subway construction

A construction method and underground pipeline technology, which can be used in excavation, artificial islands, water conservancy projects, etc., can solve problems such as pipeline breakage, fire explosion, gas leakage, etc., and achieve uniform force, high construction efficiency, and ensure safety.

Inactive Publication Date: 2020-04-07
2ND ENG CO LTD OF CHINA RAILWAY 12TH BUREAU GRP +1
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Problems solved by technology

[0002] With the rapid development of urban subways, various pipelines that have been used will be encountered during the excavation of foundation pits. If not handled properly, the soil around the existing pipelines will collapse and the pipelines will break, affecting the normal life of the surrounding residents, and even It may cause serious consequences of gas leakage in case of an open fire explosion, so a protective facility is urgently needed to solve the existing technical problems in order to lay the foundation for the safe excavation of the foundation pit

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  • Underground pipeline protective construction method for subway construction
  • Underground pipeline protective construction method for subway construction

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Embodiment approach

[0031] According to an embodiment of the present invention, preferably, the step S2) further includes: before erecting the Bailey beam 1, checking the mechanical properties of the design structure of the Bailey beam 1 to confirm that the Bailey beam 1 Thunder beam 1 meets the construction requirements. Wherein performing the mechanical characteristic checking includes: selecting corresponding calculation parameters according to the structure of the Bailey beam 1, calculating the force calculation of the Bailey beam 1 of the structure; calculating the Bailey beam design load of the Bailey beam 1, determining The Bailey beam 1 meets the design requirements and ensures the safety of construction.

[0032] According to the technical solution of the present invention, step S3) carries out foundation pit construction, and monitors the protection conditions of each pipeline 2, so as to ensure effective protection of each pipeline 2 and ensure construction safety.

[0033] According to...

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Abstract

The invention provides an underground pipeline protective construction method for subway construction. The underground pipeline protective construction method for subway construction comprises the steps that (S1) according to an underground pipeline detection result, the positions of all the pipelines crossing a foundation pit are determined, and covering soil on the pipelines are manually removedin the longitudinal direction of all the pipelines until all the pipelines are completely exposed; (S2) support seats are installed on constructed crown beams on the two sides of the foundation pit and on the central axis of the foundation pit, a bailey beam is erected on the installed support seats in the longitudinal direction of all the pipelines, and all the pipelines are arranged within thebailey beam to be protected; (S3) foundation pit construction is conducted, and the protective condition of all the pipelines is monitored; (S4) after foundation pit construction is completed, the bailey beam is detached, earthwork backfilling is conducted on all the pipelines, and an original road is recovered; (S5) after passing monitoring and acceptance inspection, pipeline protective construction is completed. The underground pipeline protective construction method for subway construction can protect all the underground pipelines and provide guarantee for safe excavation of the foundationpit.

Description

technical field [0001] The invention relates to the technical field of pipeline protection, in particular to a construction method for protecting underground pipelines in subway construction. Background technique [0002] With the rapid development of urban subways, various pipelines that have been used will be encountered during the excavation of foundation pits. If not handled properly, the soil around the existing pipelines will collapse and the pipelines will break, affecting the normal life of the surrounding residents, and even It may cause serious consequences of gas leakage and explosion in case of open fire, so a kind of protection facility is urgently needed to solve the existing technical problems, so as to prepare the foundation work for the safe excavation of the foundation pit. Contents of the invention [0003] The invention provides a construction method for protecting underground pipelines in subway construction, which protects each pipeline, prevents dama...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045E02D27/46E02D17/04
CPCE02D17/04E02D27/46E02D29/045E02D29/10
Inventor 付太新王涛王冬胜王立闯
Owner 2ND ENG CO LTD OF CHINA RAILWAY 12TH BUREAU GRP
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