Method and device for synchronously grouting shield tunnel pipe sheet

A shield tunnel segment and synchronous grouting technology, which is applied to tunnels, tunnel linings, shaft equipment, etc., can solve problems such as poor grouting effects, achieve the effect of preventing floating, preventing water from shield tail, and ensuring early stability

Inactive Publication Date: 2010-03-17
CHINA RAILWAY TUNNEL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to disclose a synchronous grouting method for shield tunnel segments, so as to solve the defect of poor grouting effect in water-rich formations of existing grouting metho

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  • Method and device for synchronously grouting shield tunnel pipe sheet
  • Method and device for synchronously grouting shield tunnel pipe sheet
  • Method and device for synchronously grouting shield tunnel pipe sheet

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Embodiment Construction

[0023] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] Such as Figure 1-4 As shown, in the prior art, the shield machine pushes the segment 1 of the lining to advance forward through the forward and backward expansion and contraction of the propulsion cylinder 25, and each segment 1 is installed into a lining ring through the segment installation machine 26. During the excavation of the machine, the segment 1 is gradually exposed from the shield shell 3, and the shield tail brush 5 is provided at the rear of the shield tail gap 4, and there is a large gap between the segment 1 and the formation outside the shield shell 3 , it is necessary to inject grout into the gap, which is the grout filling area 8, to prevent formation deformation, improve the impermeability and appearance quality of the tunnel, ensure the early stability of the segment lining, and provide support for lo...

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Abstract

The invention discloses a method and a device for synchronously grouting shield tunnel pipe sheet, solving the problem that the grouting effect in enriched water stratum is poor in the existing grouting method. The method for synchronously grouting shield tunnel pipe sheet provided by the invention comprises the following steps: A, horizontally and synchronously pouring mortar from the back of theliner building of the pipe sheet in the process of shield excavating; and B, pouring quick congealing mixture liquid to the back of the liner building of the pipe sheet while synchronously pouring the mortar. In the method and the device for synchronously grouting shield tunnel pipe sheet, the quick congealing mixture liquid and the mortar can be mixed and congealed rapidly, thereby efficiently preventing the pipe sheet from floating upwards, ensuring the initial stability of the liner building of the pipe sheet, preventing the water from flowing to the tail of the shield while opening a cabin to replace cutter in the hard rock construction for a long distance, and ensuring the construction effect.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a method and device for synchronous grouting of shield tunnel segments. Background technique [0002] In the process of shield tunneling construction, synchronous grouting operation of segment lining is an indispensable construction link in shield tunneling construction. For the large-diameter shield tunnels that have been constructed, the tunnel segments have different degrees of floating, which brings a series of quality hidden dangers and unsafe factors. Therefore, how to achieve the best effect of synchronous grouting for segment lining by taking corresponding measures, especially in unfavorable geology such as water-rich strata, is a relatively difficult problem in shield tunneling construction. Contents of the invention [0003] The purpose of the present invention is to disclose a synchronous grouting method for shield tunnel segments, so as to solve the d...

Claims

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Application Information

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IPC IPC(8): E21D11/10
Inventor 杜闯东王坤任成国游永锋
Owner CHINA RAILWAY TUNNEL
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