Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Composite lining structure for permafrost tunnel and construction technology

A construction technique and composite technology, applied in the direction of tunnel lining, tunnel, shaft lining, etc., can solve the problems of increasing operation management difficulty and maintenance cost, cracking of tunnel lining structure, economic loss, etc., to avoid engineering quality problems, simple machinery, The effect of guaranteeing the progress of the construction period

Pending Publication Date: 2018-01-16
THE FIFTH ENGEERING OF CHINA RAILWAY 5TH BUREAU GROUP
View PDF14 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the problem of tunnel antifreeze is the biggest technical problem in tunnel construction in permafrost areas. As the main disease of tunnels, frost damage can cause the tunnel lining structure to crack, peel off or even become unstable due to frost heaving. , the road surface turns into an ice lake, and the entrance of the tunnel melts and slides, all of which will have a serious impact on safe driving, greatly increase the maintenance cost of operation and management difficulties, cause great economic losses, and even lead to the scrapping of the tunnel

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composite lining structure for permafrost tunnel and construction technology
  • Composite lining structure for permafrost tunnel and construction technology
  • Composite lining structure for permafrost tunnel and construction technology

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0032] Composite lining structure: the support structure 1 is followed by the primary lining structure 2, the waterproof and thermal insulation layer 3, the secondary lining structure 4 and the thermal insulation and fireproof layer 5.

[0033] The waterproof insulation layer 3 is composed of a four-layer structure of non-woven geotextile 3-1, waterproof board 3-2, polyurethane heat insulation board 3-3 and non-woven geotextile 3-1.

[0034] The thermal insulation and fire protection layer 5 is connected to the secondary lining structure 4 through expansion bolts 5-7, one end of the expansion bolt 5-7 is installed in the secondary lining structure 4, and the other end is connected to the U-shaped connector 5-3, and the U-shaped connector 5-3 Fixed on both sides of the keel 5-4, the fiber reinforced board 5-2 is fixed on the keel 5-4, and the cavity formed between the fiber reinforced board 5-2 and the secondary lining structure 4 is filled with the thermal insulation board 5-1....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a composite lining technology suitable for a permafrost highway tunnel. The technology of three layers of linings, two layers of water preventing and three layers of heat preservation is adopted, and the technical problem that a high-grade long and big highway tunnel constructed in the permafrost regions suffers from freeze-thaw damage is effectively solved. According to the lining structure of the technology, a primary lining structure, a waterproof heat preservation layer, a secondary lining structure and a heat preservation waterproof layer are sequentially arrangedbelow a support structure. The lining technology mainly comprises primary die forming of low-temperature early strength concrete, waterproof layer construction, heat isolation layer construction, secondary lining of reinforced concrete and hole interior decoration. Compared with a traditional tunnel lining technology, air temperature changes caused by human factors within a secondary lining can beisolated from a perpetually frozen soil layer in the lining technology, it is guaranteed that lining back water can be drained in time, frost heaving is avoided, adopted materials and machines are simple, and operation and construction are easy; and the later project quality problem is solved, the tunnel safety accident probability is reduced, and meanwhile the project progress is guaranteed.

Description

technical field [0001] The invention relates to a composite lining construction method for high-altitude permafrost (level V and VI surrounding rock) tunnels, and belongs to the technical field of tunnel construction. Background technique [0002] Permafrost regions have a severe cold climate and large diurnal temperature differences. The rocks are severely weathered and the rock fissures are developed. Therefore, the problem of tunnel antifreeze is the biggest technical problem in tunnel construction in permafrost areas. As the main disease of tunnels, frost damage can cause the tunnel lining structure to crack, peel off or even become unstable due to frost heaving. , the road surface turns into an ice lake, and the entrance of the tunnel melts and slides, all of which will have a serious impact on safe driving, greatly increase the maintenance cost of operation and management difficulties, cause great economic losses, and even lead to the scrapping of the tunnel. Conten...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): E21D11/00E21D11/10E21D11/38
Inventor 袁欢蔡明玖李小盼贺小军吴秀雄刘邦玺颜林
Owner THE FIFTH ENGEERING OF CHINA RAILWAY 5TH BUREAU GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com