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Leakage blocking method for bolt holes of shield tunnel segments

A shield tunnel segment and bolt hole technology, which is applied to tunnels, tunnel linings, and earth-moving drilling and mining, etc., can solve the problems of repeated water leakage, difficulty in sealing leakage, and easy water seepage.

Pending Publication Date: 2019-11-26
南京康泰建筑灌浆科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a method for sealing the bolt holes of shield tunnel segments, so as to improve the difficulty of sealing the bolt holes of the existing shield tunnel segment, easy water seepage and repeated water leakage. defect

Method used

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  • Leakage blocking method for bolt holes of shield tunnel segments
  • Leakage blocking method for bolt holes of shield tunnel segments
  • Leakage blocking method for bolt holes of shield tunnel segments

Examples

Experimental program
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Effect test

Embodiment 1

[0073] The embodiment of the present application provides a method for plugging the leakage of bolt holes in a shield tunnel segment, which includes the following steps:

[0074] 1. If image 3 As shown, the closest seam 110 of the leaking bolt hole 101 is blocked; it includes:

[0075] 1.1. First, look for the leak 103 in the seam 110 closest to the bolt hole 101 where the leakage occurs, and then extend 60 cm outward along the seam 110 at both ends of the leak 103 in the seam 110 Drill to the inside of the splicing joint 110 to form isolation holes with a diameter of 15 mm and a hole depth of 53 cm, and extend the two isolation holes to the EPDM rubber gasket set in the splicing joint 110, and then press back The epoxy-modified polysulfide sealant is poured into the two isolation holes respectively by the type glue injection process, and is cured to form two isolation columns 140 to isolate the two ends of the leak 103 in the splicing seam 110 .

[0076] 1.2. After isolati...

Embodiment 2

[0086] Embodiment 2 provides a kind of leakage plugging method of shield tunnel segment bolt hole, which comprises the following steps:

[0087] 1. Seal the joints closest to the leaking bolt holes; including:

[0088] 1.1. First, look for the leak in the seam closest to the bolt hole where the leakage occurs, and then extend 60cm outward along the seam at both ends of the leak in the seam to the inside of the seam Drill and form an isolation hole with a diameter of 12mm and a depth of 54cm, and extend the two isolation holes to the EPDM rubber gasket set in the splicing joint, and then fill the two isolation holes with nylon elastomer to form Two spacer posts to isolate both ends of the leak in the joint.

[0089] 1.2. After isolating the two ends of the leak in the joint, dig the leak, and use aluminate micro-expansion quick-drying cement to seal the surface of the leak. After the surface of the leak is sealed, observe the leak Whether there is water seepage outside the sc...

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Abstract

The invention relates to a leakage blocking method for bolt holes of shield tunnel segments, and relates to the technical field of tunnel construction. The leakage blocking method for the bolt holes of the shield tunnel segments includes the following steps that splicing joints closest to the leaking bolt holes are blocked and the splicing joints located between two adjacent shield tunnel segments; and the leaking bolt holes are blocked. According to the leakage blocking method for the bolt holes of the shield tunnel segments, the leaking bolt holes of the shield tunnel segments can be effectively blocked so that the continuous and repeated leakage caused by improper blocking and secondary damage to segments can be avoided.

Description

technical field [0001] The present application relates to the technical field of tunnel construction, in particular to a method for plugging leakage of bolt holes in shield tunnel segments. Background technique [0002] Shield tunneling refers to the method of using a shield machine to excavate a tunnel, assembling shield tunnel segments in the machine to form a lining, and implementing grouting behind the wall to build the tunnel. It can complete the construction without disturbing the surrounding rock, thereby maximizing Minimize the impact on ground buildings and buried objects in the foundation. [0003] When shield tunnel segments are connected to each other to form a ring-shaped tunnel body, splicing seams will be formed between adjacent shield tunnel segments. The bolts connect two shield tunnel segments. Due to the high water pressure outside the tunnel body, as long as the position of the shield tunnel segment and the bolt hole has quality defects, it is likely to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/38E21D11/08
CPCE21D11/385E21D11/38E21D11/083Y02E10/20
Inventor 陈森森张克芬张雯陈梦圆
Owner 南京康泰建筑灌浆科技有限公司
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