Construction method for tunnel crossing through backfilling zone of super high-rise buildings

A technology for tunnel construction and high-rise buildings, applied in tunnels, tunnel linings, earth-moving drilling, etc., can solve problems such as ground subsidence, save construction costs, improve safety, environmental protection and economic benefits, and reduce safety risks.

Active Publication Date: 2017-08-18
中铁十一局集团第五工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the edge of each garage is a backfill area of ​​about 3 meters. The underground garages must collude with each other, and the problem of ground subsidence caused by the fall of backfill soil during tunnel construction must be solved.

Method used

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  • Construction method for tunnel crossing through backfilling zone of super high-rise buildings
  • Construction method for tunnel crossing through backfilling zone of super high-rise buildings
  • Construction method for tunnel crossing through backfilling zone of super high-rise buildings

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Embodiment Construction

[0024] Below by embodiment and in conjunction with accompanying drawing, the present invention will be further described:

[0025] A construction method for tunnels passing through the backfill area of ​​super high-rise building groups, the construction is carried out according to the following steps:

[0026] The first step is construction preparation.

[0027] The second step is multi-level self-advancing bolt advance support. to combine figure 1 , figure 2 As shown, the high-rise building has used the underground space (such as the garage) and the interface of the connecting tunnel as a section of deep foundation pit soft backfill area, which is formed when the deep foundation pit soft backfill area is built. This construction method is aimed at the construction method of the soft backfill area of ​​this section of deep foundation pit, and effectively solves the problem of subsidence of the bottom surface caused by the fall of backfill soil during the construction proce...

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Abstract

The invention discloses a construction method for a tunnel crossing through a backfilling zone of super high-rise buildings. The construction method includes the following steps of conducting construction preparation; conducting advanced support on multi-layer self-advancing anchor bolts; conducting construction of sectional drift headings; and conducting construction of a similar cantilever reinforcing liner structure. By adopting advanced support of the multi-layer self-advancing anchor bolts, annular grouting reinforcement of small pipes and construction of the similar cantilever reinforcing liner structure, the problem that ground subsidence caused by backfill falling down in the tunnel construction process is effectively solved, safety risks are greatly reduced, constriction period cost is saved, and safety, environment protection, and economic benefits are improved dramatically.

Description

technical field [0001] The invention relates to a tunnel construction method, in particular to a construction method for a tunnel passing through a backfill area of ​​a super high-rise building group, which is suitable for the construction of a shallow buried tunnel passing through a backfill area with a buried depth not less than 5 meters and a tunnel excavation section not greater than 100 square meters. Background technique [0002] At present, urban traffic congestion is getting worse, and the ground space can no longer meet the urban functional requirements. In order to alleviate the pressure of ground traffic, the development status of underground space is becoming more and more prominent. It is inevitable to pass through super high-rise buildings in dense urban areas. , it is also necessary to properly solve the impact of the tunnel project on the existing buildings. [0003] The underground garages of the early urban buildings are independent of each other, and each ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D21/00E21D20/02E21D11/14
CPCE21D9/00E21D11/14E21D20/02E21D21/00
Inventor 李果章献王元清陈龙李彦玮赵友超刘新荣
Owner 中铁十一局集团第五工程有限公司
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