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Tunnel dismantling innovative process

A tunnel and process technology, applied in infrastructure engineering, mining installations, sheet pile walls, etc., can solve problems such as inability to guarantee completion, and achieve the effects of rapid demolition work, improved demolition efficiency, and shortened construction period.

Active Publication Date: 2020-11-17
CCCC THIRD HARBOR ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the original construction process: construction of surrounding protection piles, water-stop curtains, precipitation wells, column piles, support installation, dismantling of tunnels, and construction of the main structure, it will not be guaranteed to be completed within the two-month construction period, and it is necessary to find a breakthrough in technology

Method used

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  • Tunnel dismantling innovative process
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Embodiment Construction

[0034] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer ” refer to directions towards or away from the geometric center of a particular part, respectively.

[0035] As shown in the figure, an innovative technology for tunnel demolition described in the present invention is constructed in two parts:

[0036] 1. The open section on the south side

[0037] Due to the shallow open section on the south side and the large construction space, the original SMW pile enclosure structure on the south side of the tunnel was changed to the Lars...

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Abstract

The invention discloses a tunnel dismantling innovative process. For an open section, an original SMW construction method pile enclosure structure is changed into a Larsen steel sheet pile enclosure structure, meanwhile, transverse supports in a pit are replaced with a soil returning mode on the outer side of the enclosure structure, and a stand column pile construction procedure is omitted; for aburied section, the tunnel buried section is divided into annular concrete structures with the interval of 6 m and the width of 3 m, H-shaped steel is implanted into a dismantling area with the interval of 6 m to replace a latticed column, the annular structure with the interval of 3 m is broken off after transverse steel pipe supports are installed so as to achieve dismantling of a tunnel, and the procedure of tapping a top plate and a bottom plate to construct latticed column piles is omitted; a plurality of sections are constructed in parallel, so that the demolition efficiency is greatlyimproved, the construction period is shortened, and the influence period on surrounding buildings is shortened; and the cost is reduced, and environmental pollution caused by cast-in-place pile and construction method pile construction is avoided.

Description

technical field [0001] The invention belongs to the technical field of tunnel dismantling, and in particular relates to an innovative technology for tunnel dismantling. Background technique [0002] In March 2020, it is planned to hold the World Indoor Athletics Championships in Nanjing Youth Olympic Park. It is necessary to build two new tunnels and a new pipe gallery next to it. The project must be completed before the event. It includes the demolition of an original tunnel. On April 18, 2019, the review of the "Special Construction Plan for Demolition of XX Road Tunnel" was completed. Because the construction area belongs to the construction involving the subway, it needs to be reported to the subway department. The filing includes the design plan And the construction plan, all the procedures are cumbersome. As of the beginning of May, the relevant procedures have been completed and the conditions for construction have been completed. [0003] Considering that the flood ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F17/00E02D5/04E02D17/04E02D17/20E02D5/28
CPCE21F17/00E02D5/04E02D17/04E02D17/20E02D5/28
Inventor 蔡惠华尹建兵顾晓彬张晓辉徐铁峥
Owner CCCC THIRD HARBOR ENG