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Grouting and sealing waterproof shield segment structure and construction method thereof

A technology of shield segment and construction method, which is applied to earth-moving drilling, wellbore lining, tunnel lining, etc., can solve the problems of difficult maintenance, damage to segment structure, and high cost, so as to reduce engineering costs and operation and maintenance costs. , reduce repairs, economical and safe effects

Pending Publication Date: 2020-02-21
CHINA RAILWAY 19TH BUREAU GRP RAIL TRANSIT ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This plugging method damages the structure of the segment, is unfavorable to the strength of the segment, and the maintenance is difficult and expensive
In summary, there is no good waterproof method for shield segment construction at present

Method used

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  • Grouting and sealing waterproof shield segment structure and construction method thereof
  • Grouting and sealing waterproof shield segment structure and construction method thereof
  • Grouting and sealing waterproof shield segment structure and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The thickness of a shield segment is 300mm, and the structural layout of the four sides of the segment is as follows: figure 1 shown. The rubber waterstop 2 is pasted at a distance of 30 mm from the outer surface of the segment, with a width of 20 mm and a thickness of 10 mm. The grouting waterstop groove 3 is 30mm inside the rubber waterstop strip 2, 40mm away from the inner surface of the segment 1, with a width of 180mm and a depth of 20mm. Four projections 4 are arranged radially in the grouting waterstop 3, the projection width is 20mm, and the projection height is 15mm. The small grouting hole 5 is set at the center of the grouting water stop groove 3 on each side of the segment, between the third and fourth protrusions 4 . The small grouting channel 7 is 45° to the side of the segment 1 and leads to the inner surface of the segment.

Embodiment 2

[0029] The thickness of a shield segment is 200mm, and the structural layout of the four sides of the segment is as follows: figure 1 shown. The rubber waterstop 2 is pasted at a distance of 25mm from the outer surface of the segment, with a width of 20mm and a thickness of 10mm. The grouting waterstop groove 3 is 20mm inside the rubber waterstop strip 2, 30mm away from the inner surface of the segment 1, with a width of 105mm and a depth of 20mm. Two projections 4 are arranged radially in the grouting waterstop 3, the width of the projections is 20mm, and the height of the projections is 15mm. The small grouting hole 5 is set at the center of the grouting water stop groove 3 on each side of the segment, between the two protrusions 4 . The small grouting channel 7 is 45° to the side of the segment 1 and leads to the inner surface of the segment. After the segment assembly is completed, such as image 3 As shown, through the grouting equipment, the grouting waterstop area i...

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Abstract

The invention discloses a grouting and sealing waterproof shield segment structure and a construction method thereof. The segment structure comprises four splicing surfaces, wherein the four splicingsurfaces are arranged by adopting the same structure and include a rubber waterstop area, a grouting and sealing area, a small grouting hole and a bolt hole from outside to inside. The method specifically comprises the following steps of (1) forming a sealed grouting and sealing area by grouting and sealing grooves of adjacent segments after the segments are spliced; (2) using grouting equipment for pouring sealing grout to the grouting grooves from the small grouting hole to fill up during shield construction; and (3) immediately sealing the small grouting hole when a guide tube is pulled outso as to prevent the grout from flowing back. According to the grouting and sealing waterproof shield segment structure and the construction method, the problem of leakage of water in a shield tunnelcan be economically and effectively solved.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering shield construction, in particular to a grouting sealing waterproof shield segment structure and a construction method thereof. Background technique [0002] Since the beginning of the 21st century, with the rapid development of my country's national economy, the urbanization process has been accelerating, and the contradiction between urban population concentration and urban ground transportation infrastructure has become increasingly prominent. In order to alleviate this contradiction, modern urban construction began to develop three-dimensional traffic engineering, among which the construction of tunnels has entered a historic peak and has become one of the themes of urban modernization today. The shield tunneling method has become a commonly used construction method for tunnel construction due to its advantages of large transport volume, fast speed, low noise, and light pollution. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/08E21D11/38
CPCE21D11/08E21D11/385
Inventor 宋世攻朱志铎张军万瑜彭宇一李纤许啸宇宋维龙宋蕾
Owner CHINA RAILWAY 19TH BUREAU GRP RAIL TRANSIT ENG
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