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Double-layer water-stopping steel ring for shield starting tunnel portal and mounting method of double-layer water-stopping steel ring

A starting hole and steel ring technology, which is applied in earthwork drilling, mining equipment, tunnels, etc., can solve problems such as high construction safety risks and leakage of single-layer water-stop steel rings, and achieve a simple structure and guarantee construction safety Effect

Inactive Publication Date: 2013-11-27
ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0009] The invention provides a double-layer water-stop steel ring and its installation method for the starting tunnel of a shield tunnel, in order to solve the technical defects of the prior art that the single-layer water-stop steel ring is prone to local leakage and has a large construction safety risk

Method used

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  • Double-layer water-stopping steel ring for shield starting tunnel portal and mounting method of double-layer water-stopping steel ring
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  • Double-layer water-stopping steel ring for shield starting tunnel portal and mounting method of double-layer water-stopping steel ring

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0029] Such as Figure 1 to Figure 4 Shown: The double-layer water-stop steel ring of the starting hole of the shield machine is composed of a pre-embedded steel ring 1, a cord rubber plate 2, a fixed ring plate 3, a rib plate 4, a grouting pipe 5, a front plate 6, and the first ring plate 7. A stiffening plate 8, a water-stop box 9, a flap 10 and a second ring plate 11 are formed. The water-stop box 9 is welded by the fixed ring plate 3 , the grouting pipe 5 and the front plate 6 , and the rib plate 4 is installed in the water-stop box 9 . The thickness of the fixed ring plate 3 is 16 mm, the thickness of the front plate 6 is 16 mm, the size of the grouting ...

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Abstract

The invention provides a double-layer water-stopping steel ring for a shield starting tunnel portal. The double-layer water-stopping steel ring comprises an embedded steel ring, a cord fabric rubber plate, a fixed ring plate, a ribbed plate, a grouting pipe, a front plate, a first circular plate, a stiffening plate, a water-stopping tank, two turning plates and a second circular plate, wherein the water-stopping box is formed by welding of the fixed ring plate, the grouting pipe and the front plate, the ribbed plate is installed in the water-stopping tank, the stiffening plate is mounted on the outer side of the second circular plate, and the two turning plates are installed on the first circular plate and the second circular plate respectively. The double-layer water-stopping steel ring for the shield starting tunnel portal and a mounting method of the double-layer water-stopping steel ring have the advantages that mounting of the double-layer water-stopping steel ring for the shield starting tunnel portal adopts the structure of the water-stopping tank to proof water, the double-layer water-stopping steel ring is mounted, the structure is simple, the waterproof requirement for shield tunnels is met, the double-layer water-stopping steel ring is convenient to operate and has a good waterproof effect, and construction safety is guaranteed.

Description

technical field [0001] The invention belongs to the field of underground construction, and in particular relates to a double-layer water-stop steel ring for a shield starting portal and an installation method thereof. Background technique [0002] With the rapid development of China's construction, the current highway and railway tunnels have some new features: large cross-section, long tunnel, complex geological conditions, and unfavorable ground conditions in front of the tunnel excavation face can easily cause tunnel collapse and water gushing. These factors not only bring great difficulties to tunnel construction technically, but also often lead to casualties and delays in construction due to sudden accidents, resulting in huge economic losses, and have also attracted great attention from the national regulatory authorities. [0003] With the continuous development of science and technology, a shallow buried shield tunneling method has been deeply studied and applied abr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/14
Inventor 何毅李义华王付利周兆勇庞征胡景军李志军杨艳玲赵康林
Owner ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
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