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Shield tunnel duct piece structure and shield tunnel lining

A shield tunnel segment and segment technology, which is applied in tunnel lining, tunnel, wellbore lining, etc., can solve the problems of unsatisfactory control effect of surrounding environment, not equipped with synchronous grouting pipeline, and the effect cannot be optimized, etc. To achieve the effect of simple and practical structure, avoiding the concentration of grouting area and reducing the impact

Pending Publication Date: 2019-06-14
宁波用躬科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some shield tunneling projects, due to space and other reasons, the shield machine is not equipped with synchronous grouting pipelines, and the grouting holes on the segments are used for grouting during construction. implementation, resulting in unsatisfactory control of the impact on the surrounding environment; on the other hand, when it is necessary to use the grouting hole reserved for the segment for secondary grouting, there is only one grouting hole on the traditional segment, and the grouting area is relatively concentrated , the disturbance to the soil is large, and the effect of controlling formation deformation cannot be optimal

Method used

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  • Shield tunnel duct piece structure and shield tunnel lining
  • Shield tunnel duct piece structure and shield tunnel lining
  • Shield tunnel duct piece structure and shield tunnel lining

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: As shown in the figure, a shield tunnel segment structure includes a segment body 1 and at least one set of grouting mechanisms arranged in the segment body 1, and each set of grouting mechanisms includes a plurality of front and rear The grouting pipes 2 distributed at intervals, the upper ends of the multiple grouting pipes 2 all extend to the outer surface of the segment body 1, and the upper ends of the multiple grouting pipes 2 are fixed with check valves 3, and the multiple grouting pipes 2 The lower end of the second connecting pipe 5 communicates with the first connecting pipe 4 distributed horizontally, and the second connecting pipe 5 communicates with the lower end of the second connecting pipe 5 extending to the inner surface of the segment body 1 .

Embodiment 2

[0025] Embodiment 2: As shown in the figure, a shield tunnel segment structure includes a segment body 1 and at least one set of grouting mechanisms arranged in the segment body 1, and each set of grouting mechanisms includes a plurality of front and rear The grouting pipes 2 distributed at intervals, the upper ends of the multiple grouting pipes 2 all extend to the outer surface of the segment body 1, and the upper ends of the multiple grouting pipes 2 are fixed with check valves 3, and the multiple grouting pipes 2 The lower end of the second connecting pipe 5 communicates with the first connecting pipe 4 distributed horizontally, and the second connecting pipe 5 communicates with the lower end of the second connecting pipe 5 extending to the inner surface of the segment body 1 .

[0026] In this embodiment, there are two grouting pipes 2 , and the second connecting pipe 5 is located at the midpoint of the line connecting the two grouting pipes 2 .

[0027] In this embodimen...

Embodiment 3

[0029] Embodiment 3: As shown in the figure, a shield tunnel segment structure includes a segment body 1 and at least one set of grouting mechanisms arranged in the segment body 1, and each set of grouting mechanisms includes a plurality of front and rear The grouting pipes 2 distributed at intervals, the upper ends of the multiple grouting pipes 2 all extend to the outer surface of the segment body 1, and the upper ends of the multiple grouting pipes 2 are fixed with check valves 3, and the multiple grouting pipes 2 The lower end of the second connecting pipe 5 communicates with the first connecting pipe 4 distributed horizontally, and the second connecting pipe 5 communicates with the lower end of the second connecting pipe 5 extending to the inner surface of the segment body 1 .

[0030] In this embodiment, there are three grouting pipes 2 , and the second connecting pipe 5 is located directly below the middle grouting pipe 2 .

[0031] In this embodiment, the shield tunnel...

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Abstract

The invention discloses a shield tunnel duct piece structure. The shield tunnel duct piece structure comprises a duct piece body, and further comprises one or more sets of grouting mechanisms arrangedin the duct piece body, each set of grouting mechanism comprises a plurality of grouting pipes distributed at front-back intervals, the upper ends of the grouting pipes extend to the outer surface ofthe duct piece body, back-pressure valves are fixed to the upper ends of the grouting pipes, the lower ends of the grouting pipes in communication with first connection pipes distributed horizontally, the first connection pipes communicate with second connection pipes, and the lower ends of the second connection pipes extend to the inner surface of the duct piece body. The shield tunnel duct piece structure has the advantages that the stratum loss can be reduced, and the impact of construction on the surrounding environment can be reduced.

Description

technical field [0001] The invention relates to the field of tunnel engineering, in particular to a shield tunnel segment structure and a shield tunnel lining. Background technique [0002] The shield method is a fully mechanized construction method in underground excavation construction. It pushes the shield machine in the ground, supports the surrounding rock through the shield casing and segments to prevent collapse into the tunnel, and at the same time Excavating the soil body with a cutting device in front of the excavation face, transporting it out of the hole through the excavation machine, jacking it in the rear with a jack, and assembling the precast concrete segments to form a mechanized construction method of the tunnel structure, which is widely used It is used in the construction of urban traffic tunnels. [0003] Among them, the formation loss during the excavation process of the shield machine is the biggest factor affecting the surface settlement, and grouti...

Claims

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Application Information

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IPC IPC(8): E21D11/08E21D11/10
Inventor 董子博周俊宏
Owner 宁波用躬科技有限公司
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