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Shield segment for controlling floating, segment floating control system and control method thereof

A shield segment and segment technology, which is applied to the shield segment, segment floating control system and its control field, and can solve the problems of poor floating control effect

Pending Publication Date: 2021-07-06
中建八局轨道交通建设有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the defects existing in the existing technology, a shield segment for controlling floating, a segment floating control system and its control method are provided to solve the poor effect of synchronous grouting to control the floating after the conventional shield segment is assembled and formed. The problem

Method used

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  • Shield segment for controlling floating, segment floating control system and control method thereof
  • Shield segment for controlling floating, segment floating control system and control method thereof
  • Shield segment for controlling floating, segment floating control system and control method thereof

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Embodiment Construction

[0029] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the accompanying drawings.

[0030] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The application will be described in detail below with reference to the accompanying drawings and embodiments.

[0031] refer to Figure 1 to Figure 4 As shown, the present invention provides a shield segment for controlling buoyancy, including: a ring segment body 1 and an inflatable air bag 2.

[0032] In this embodiment, the outer ring surface of the segment body 1 is formed with strip-shaped groove...

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Abstract

The invention discloses a shield segment for controlling floating, a segment floating control system and a control method thereof. The shield segment comprises a ring of segment body and an expansion airbag, wherein a strip-shaped groove formed in the circumferential direction of the segment body is formed in the outer ring surface of the segment body, the strip-shaped groove is located at the top of the segment body, a through inflation hole is formed in the segment body, and the inflation hole communicates with the strip-shaped groove; and the expansion airbag is embedded in the strip-shaped groove, an air inlet of the expansion airbag is connected to the inflation hole, and the expansion airbag extends to the outside of the strip-shaped groove after being inflated and expanded and is supported between the outer ring surface of the segment body and the top hole wall of an excavated tunnel to adjust the distance between the outer ring surface of the segment body and the hole wall of the top of the tunnel. The shield segment solves the problem that the floating control effect of synchronous grouting after splicing and forming of a conventional shield segment is poor.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to a shield segment for controlling floating, a segment floating control system and a control method thereof. Background technique [0002] After the conventional shield segments are assembled and formed, the segments are controlled to float up through synchronous grouting at the 3 and 9 points of the segments. However, during the construction process, the fluidity of the grout for synchronous grouting is often large, and the purpose of floating the segments cannot be achieved. Especially in strata with rich groundwater, after the grout of synchronous grouting is diluted by groundwater, the initial setting time of the grout is greatly reduced and the effect of controlling the flotation through the synchronous grout is lost, resulting in large segment misalignment and more damage. The forming quality of shield tunneling is greatly reduced. Contents of the invention [00...

Claims

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Application Information

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IPC IPC(8): E21D11/08E21D11/10
CPCE21D11/08E21D11/10
Inventor 朱湘旭寇芙蓉
Owner 中建八局轨道交通建设有限公司
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