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Tunnel secondary lining construction process

A secondary lining and construction technology technology, applied in the direction of tunnel lining, tunnel, shaft lining, etc., can solve the problems of layer jump pouring, concentrated material distribution, delay in taking over, etc., to achieve the effect of avoiding centralized material distribution, saving construction costs and avoiding omissions

Pending Publication Date: 2022-08-09
GUANGDONG PROVINCIAL CHANGDA HIGHWAY ENG
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Problems solved by technology

[0004] The purpose of the present invention is to provide a tunnel secondary lining construction process, which is used to solve the problem that the current secondary lining method of one-time pouring can easily lead to layer skipping and centralized material distribution, and the sand surface that is easy to be formed by vibrating and rushing the material and the connection delay is easy Problems leading to cold seams

Method used

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Embodiment Construction

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] see Figure 1-4 As shown, a tunnel secondary lining construction process includes the following steps S1-S4.

[0042] S1. According to the tunnel design data, make a two-lined formwork trolley. The two-liner formwork trolley includes a forming formwork part and a pouring part.

[0043] From bottom to top, the two side wall sections of the forming template part are sequentially provided with multiple first-level working window...

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Abstract

The invention discloses a tunnel secondary lining construction technology. The tunnel secondary lining construction technology comprises the following steps that S1, a secondary lining formwork trolley is manufactured according to tunnel design data; the secondary lining formwork trolley comprises a forming formwork part and a pouring part. And S2, side wall section layered pouring is conducted on the first-stage working window, the second-stage working window and the third-stage working window in sequence through a pouring part. And S3, concrete pouring is carried out on the arch crown section through the embedded pipe, and formwork grouting is carried out on the arch crown section through the grouting holes after pouring. And S4, the secondary lining formwork trolley is dismantled, and secondary lining maintenance is conducted. By means of window-by-window layered pouring of the secondary lining formwork trolley, the sand surface formed by vibrating and material driving and cold joints caused by pipe connecting delay can be effectively reduced, multiple same-level working windows are all utilized, and skip layer pouring and concentrated material distribution are avoided.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a tunnel secondary lining construction technology. Background technique [0002] Relatively speaking, secondary lining and initial support refer to the inner lining built with concrete and other materials under the condition that the tunnel has been initially supported to achieve the effect of strengthening support and optimizing the route of the waterproof and drainage system. [0003] At present, in the secondary lining, one-time pouring of concrete is adopted. The one-time pouring volume is large and the space is relatively small, which is easy to lead to skipping pouring and concentrated distribution, and the sand surface that is easy to be formed by vibrating and rushing materials, and the delay in taking over can easily lead to cold. sew. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to provide a tunnel secondary lining constructio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10
CPCE21D11/10E21D11/105Y02E10/20
Inventor 钟招炬谭艳臣黄超邓自立吕锋薛智杨攀峰彭传宇罗康辉
Owner GUANGDONG PROVINCIAL CHANGDA HIGHWAY ENG
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