Anti-suspension device, system and method based on shield segment

A technology of shield segment and suspension device, which is applied in vertical shaft equipment, earthwork drilling, wellbore lining, etc., can solve the problems of not conforming to the tunnel, the floating of the ring segment deviates from the original positioning, etc., so as to enhance the integrity and ensure the compactness. Effects of uniformity and uniformity, safety assurance

Inactive Publication Date: 2020-07-17
JINAN MUNICIPAL ENG DESIGN & RES INSITITUTE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it ignores the gap formed between the segment and the surrounding rock during the tunneling process of the shield machine after the segment is spliced ​​into a ring. When grouting behind the back, the grout will flow downward due to gravity, and the grouting pressure will cause the grout to flow downward. The floating of the ring segment deviates from the original position and does not conform to the original design line of the tunnel

Method used

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  • Anti-suspension device, system and method based on shield segment
  • Anti-suspension device, system and method based on shield segment
  • Anti-suspension device, system and method based on shield segment

Examples

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Embodiment 1

[0030] Attached below Figure 1-Figure 6 The present invention is described in detail, specifically, the structure is as follows:

[0031] This embodiment provides an anti-suspension device based on a shield segment, including a shield segment 1 and anchoring grouting bolts 3 , and the shield segment 1 is provided with a bolt hole 2 for inserting the anchoring grouting bolt 3 .

[0032] like image 3 As shown, the bolt hole 2 is located at the center of the shield segment 1, so that the force on the shield segment 1 is relatively uniform. The bolt hole 2 includes a first round hole 2-1 and a second round hole 2-2 arranged coaxially, and the diameter of the first round hole 2-1 is larger than the diameter of the second round hole 2-2. The second round hole 2-2 is provided with an internal thread.

[0033] like Figure 4 As shown, a grouting hole 3-4 is reserved in the center of the anchoring grouting bolt 3 for inserting a grouting pipe, and the grouting hole 3-4 runs throu...

Embodiment 2

[0038] This embodiment provides an anti-suspension system based on shield segments, such as Figure 8 As shown, it includes a plurality of anti-suspension devices described in Embodiment 1, and a plurality of shield segments 1 are assembled together to form a ring structure. In this embodiment, six shield segments 1 form a ring, and since the bolt hole 2 is located at the center of the end shield segment 1, the force on the shield segment 1 is relatively uniform, and the overall structure of the shield segment 1 is enhanced sex.

[0039] like Figure 7 As shown, a waterproof gasket 6 is provided between the anchoring grouting bolt 3 and the bolt hole 2 to prevent groundwater behind the shield segment 1 from flowing into the tunnel along the reserved bolt hole 2 . In this embodiment, the waterproof gasket 6 is a rubber gasket. It can be understood that in other embodiments, the waterproof gasket 6 can also use other waterproof materials.

Embodiment 3

[0041] This embodiment provides a construction method of an anti-suspension system based on a shield segment, specifically as follows:

[0042] After the shield segment 1 is assembled into a ring, the shield machine continues to drive forward, and the anchor grouting bolt 3 is driven through the bolt hole 2, and a waterproof gasket 6 is added between the anchor grouting bolt 3 and the shield segment 1. After the installation of the anchoring grouting bolt 3 is completed, the grouting pipe is inserted into the bottom of the bolt through the grouting hole 3-4, and the grouting pipe is connected to the grouting instrument. The fiber quick-setting liquid 5 is injected through the grouting pipe, and the polymer film 4 rapidly expands to the surrounding under the action of the grouting pressure, increasing the contact area with the surrounding rock 7 .

[0043] When the surrounding rock 7 is weak soil, part of the anchoring grouting bolts 3 will enter the soil. At this time, the pol...

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Abstract

The invention discloses an anti-suspension device, system and method based on a shield segment. The technical scheme is that the anti-suspension device comprises the shield segment and an anchoring grouting bolt, and the shield segment is provided with a bolt hole for inserting the anchoring grouting bolt; a grouting hole for inserting a grouting pipe is reserved in the center of the anchoring grouting bolt, the anchoring grouting bolt comprises a bolt main body and a polymer film arranged at the bottom of the bolt main body, fiber rapid hardening liquid is injected through the grouting pipe,and the polymer film can be rapidly expanded under the action of grouting pressure. According to the anti-suspension device disclosed by the invention, a looped shield segment can be effectively positioned and fixed, the position of an original design line is accurately positioned, meanwhile, the grouting compactness can be improved, and it is guaranteed that the grouting thicknesses of the periphery of the back of the looped segment are the same.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to an anti-suspension device, system and method based on shield segments. Background technique [0002] With the rapid development of my country's underground rail transit, shield tunneling technology has been widely used. The splicing and positioning of shield segments in the construction process of shield tunneling is directly related to the overall quality of the shield tunnel and affects the durability and safety of the tunnel. [0003] The inventors found that in the prior art, the deficiencies in the splicing process of the shield segment were mostly studied, and a better solution was given for the deficiencies in the splicing. However, it ignores the gap formed between the segment and the surrounding rock during the tunneling process of the shield machine after the segment is spliced ​​into a ring. When grouting behind the back, the grout will flow downward due to g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D11/08E21D11/10
CPCE21D9/0607E21D11/083E21D11/10
Inventor 牟林海郑召怡王晓媚徐豹之王云博李彦明
Owner JINAN MUNICIPAL ENG DESIGN & RES INSITITUTE GRP
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