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A system for waterproofing, heat preservation and pressure regulation of tunnels in cold regions and its construction method

A pressure regulating system and tunnel technology in cold regions, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as thermal insulation effect constraints, and achieve the effect of ensuring quality and avoiding damage

Active Publication Date: 2019-01-29
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by factors such as construction technology, thermal insulation material compression performance and thickness, the thermal insulation effect is restricted

Method used

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  • A system for waterproofing, heat preservation and pressure regulation of tunnels in cold regions and its construction method
  • A system for waterproofing, heat preservation and pressure regulation of tunnels in cold regions and its construction method
  • A system for waterproofing, heat preservation and pressure regulation of tunnels in cold regions and its construction method

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Embodiment Construction

[0027] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0028] Such as Figure 1 to Figure 6 Shown: a system for waterproofing and pressure regulation of tunnels in cold regions, including primary support 1, pressure regulation layer and secondary lining 2, and the pressure regulation layer is set between primary support 1 and secondary lining 2;

[0029] The pressure regulating layer is made of rubber airbag units 3 spliced ​​together. The square rubber airbag unit 3 has a rectangular structure. The upper surface and the lower surface of the rubber airbag unit 3 are closely attached to the primary support 1 and the secondary lining 2 respectively. , the distance between the upper surface and the lowe...

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Abstract

A construction method for tunnel waterproofing, heat preservation and pressure regulating system in cold regions, comprising primary support, pressure regulating layer and secondary lining, the pressure regulating layer is arranged between primary supporting and secondary lining; pressure regulating layer It is made of rubber airbag units spliced ​​together, and any two adjacent rubber airbag units are in concave-convex sealing fit. A pressure adjustment layer is set between the primary support and the secondary lining, which can effectively transmit the surrounding rock pressure. For the increased frost heaving force or other unexpected forces in winter, it can be offset by its own deformation and pressure conditions, avoiding the secondary lining damage. The pressure regulating layer is made up of rubber airbag units, and the rubber airbag unit is filled with gas with compressibility and high thermal resistance, and the rubber airbag unit and the filled stagnant air are poor conductors of heat. The bladder can effectively prevent the transfer of heat and form a thermal insulation layer between the primary support and the secondary lining.

Description

technical field [0001] The invention relates to the field of tunnels, in particular to a construction method for waterproofing, heat preservation and pressure regulating systems of tunnels in cold regions. Background technique [0002] my country's cold regions are widely distributed, and the demand for transportation is strong. As an effective way to cross mountains and ridges, tunnel engineering is widely used. In winter, tunnel frost damage occurs from time to time. On the one hand, it manifests as icing problems such as icicles, icicles, and ice plugs, and on the other hand, it manifests as damage, falling blocks or even collapse of the tunnel structure due to frost heaving forces. Frost damage in tunnels in cold regions is mainly due to inadequate groundwater treatment and thermal insulation measures in tunnels. If the problem of groundwater and tunnel insulation can be effectively solved, it will become the key to the prevention and control of tunnel freezing damage i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00E21D11/10E21D11/38
CPCE21D11/00E21D11/102E21D11/105E21D11/385
Inventor 仇文革孙克国郑强
Owner SOUTHWEST JIAOTONG UNIV
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