Construction method for shallow depth bored tunnel to penetrate through box culvert

A technology of shallow burial and underground excavation and construction method, which is applied in the direction of tunnels, earthwork drilling, instruments, etc., and can solve the problems of limited construction tunnel range, inability to completely avoid the influence of box culverts, and inability to obtain results

Active Publication Date: 2017-05-31
THE NO 6 ENG CO LTD OF CHINA RAILWAY 20TH BUREAU GRP
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AI Technical Summary

Problems solved by technology

[0003] The box culvert is a common drainage device in urban underground buildings. When tunnels are buried shallowly, the excavation depth of the tunnel can be lowered in advance when encountering a box culvert, and then safely pass through the lower part of the box culvert. However, this method requires a large distance in advance to sta

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  • Construction method for shallow depth bored tunnel to penetrate through box culvert
  • Construction method for shallow depth bored tunnel to penetrate through box culvert
  • Construction method for shallow depth bored tunnel to penetrate through box culvert

Examples

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Embodiment Construction

[0070] A construction method for crossing a box culvert with a shallow buried tunnel, the method comprising the following steps:

[0071] Step 1. Construction preparation:

[0072] Step 101. Determine the position of the box culvert: use radar to detect the relative position of the box culvert 1 and the tunnel being constructed. The box culvert 1 is located above and intersects the tunnel being constructed. distance h 1 less than the height h of the tunnel being constructed,

[0073] Such as figure 2 and image 3 As shown, what needs to be explained is the distance h between the bottom of the box culvert 1 and the bottom of the tunnel to be constructed 1 is less than the height h of the constructed tunnel, indicating that the height of the box culvert 1 is too low, which affects the original planned construction of the constructed tunnel, and the height h of the box culvert section 4 3 After subtracting 2Δh, it is greater than the height h of the driving safety area of ​...

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Abstract

The invention discloses a construction method for a shallow depth bored tunnel to penetrate through a box culvert. The method comprises the following steps of construction preparation, construction of a preparation section, determination of the size of a box culvert section, construction of a sagging transitional section, construction of the box culvert section, construction of an upward-tilting transitional section, construction of an ending section, inspection of the supporting strength, and restoration of normal excavation of the constructed tunnel. The transition sections of the tunnel are short, the bottom of the tunnel is unchanged in excavation depth, only the shape of the section of the tunnel is changed, the influence of the existing box culvert on tunnel construction is ingeniously avoided, and the construction progress is guaranteed on the premise that the construction safety is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of construction of shallow-buried underground excavation tunnels, in particular to a construction method for shallow-buried underground excavation tunnels passing through box culverts. Background technique [0002] With the development of the national economy and the acceleration of urbanization, the domestic urban subway traffic construction is developing more and more rapidly. In the construction of subway transportation, it is often encountered that the tunnel crosses ground obstacles such as existing buildings, roads, and water channels, as well as underground obstacles such as underground sewers, box culverts, and pipelines. Such sections often affect the progress and construction of tunnels. Safety. When constructing tunnels in such sections, it is necessary to control the settlement within the influence range of the tunnel and ensure the safety and smooth progress of the project itself. Therefore, it ...

Claims

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Application Information

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IPC IPC(8): E21D9/00G06F17/50
CPCE21D9/00G06F30/23
Inventor 郝龙飞李瑛武群虎朱建峰胡智慧余文元王亚军
Owner THE NO 6 ENG CO LTD OF CHINA RAILWAY 20TH BUREAU GRP
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