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Shallow underground excavation urban underground integrated pipe gallery unsupported construction method and integrated pipe gallery

A technology of integrated pipe gallery and shallow burial and underground excavation, which is applied in underground chambers, earthwork drilling, wellbore lining, etc., can solve problems such as increasing costs, inability to use construction machinery, and restricting the progress of excavation.

Pending Publication Date: 2019-03-22
CCCC FOURTH HIGHWAY ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The installation and removal of the temporary support is not only cumbersome and complicated, which increases the cost, but also due to the limitation of the temporary support, construction machinery cannot be used, which seriously restricts the excavation progress

Method used

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  • Shallow underground excavation urban underground integrated pipe gallery unsupported construction method and integrated pipe gallery
  • Shallow underground excavation urban underground integrated pipe gallery unsupported construction method and integrated pipe gallery
  • Shallow underground excavation urban underground integrated pipe gallery unsupported construction method and integrated pipe gallery

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] This embodiment provides a support-free construction method for a shallow-buried urban underground comprehensive utility gallery, which includes the following steps:

[0023] Step 1. Determine the number and location of small pilot holes to be excavated step by step according to the number and location of cabins designed for the pipe gallery. For example, two small pilot holes are used for the double-cabin pipe gallery, and three small pilot holes are used for the three-cabin pipe gallery. The boundary of each small pilot hole coincides with the partition wall after the pipe gallery is completed.

[0024] Step 2: After each excavation of the small pilot tunnel is c...

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Abstract

The invention relates to a shallow underground excavation urban underground integrated pipe gallery unsupported construction method and an integrated pipe gallery. The method comprises determining thenumber and the position of small guide holes for step-by-step excavation according to the number and the position of cabins designed in the pipe gallery; conducting preliminary bracing after each excavation footage of the small guide holes, arranging permanent vertical steel supports at the intersections of the excavation boundary and vertical middle partition walls, and connecting the upper andlower ends of the permanent vertical steel supports and grid steel frames or steel arch frames in the preliminary bracing of the small guide holes respectively; constructing secondary linings after the preliminary bracing of the small guide holes, supplementing the permanent vertical steel supports according to the design requirements, arranging a threaded steel mesh between the adjacent permanentvertical steel supports, connecting the threaded steel mesh with the corresponding permanent vertical steel supports, and utilizing the permanent vertical steel supports as the framework to cast themiddle partition wall concrete to form the reinforced concrete middle partition walls and further form the pipe gallery structure with the preliminary bracing and the secondary linings. According to the method, the structure strength of the middle partition walls is improved while removal of the steel supports is avoided.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a support-free construction method and a comprehensive pipe gallery for shallow buried and underground excavated urban underground comprehensive pipe galleries. Background technique [0002] The urban underground comprehensive utility corridor is an emerging infrastructure construction section in recent years. It intensively arranges and manages various municipal pipelines and improves management efficiency. Since the buried depth of the pipe gallery is generally shallow and the section is large, when the shallow buried underground excavation method is used for construction, it must be excavated in multiple small pilot tunnels, and temporary supports must be erected at the same time. Before the second lining is applied, the temporary support is removed. The installation and removal of the temporary support is not only cumbersome and complicated, which i...

Claims

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Application Information

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IPC IPC(8): E21D9/00E21D11/28E21D11/10
CPCE21D9/00E21D11/10E21D11/107E21D11/28
Inventor 王成王旭王硕胡浩方刘俊奇李鋆
Owner CCCC FOURTH HIGHWAY ENG
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