Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Construction method of water-rich loess tunnel capable of passing through loess gulley

A technology for loess tunnels and construction methods, which is applied to tunnels, tunnel linings, and earthwork drilling and mining, etc., can solve problems such as tunnel collapse, the influence of surrounding rock moisture content, and the deterioration of driving conditions.

Active Publication Date: 2020-02-14
CHINA RAILWAY 20 BUREAU GRP +3
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, shallow buried tunnels and shallow tunnel sections have high permeability coefficient and high water content, and the water content of the surrounding rock is significantly affected by atmospheric precipitation. Great risk to the tunnel
[0006] In addition, due to the special mechanical properties and structural characteristics of loess, the poor stability and low bearing capacity of surrounding rock have become the main problems faced by loess tunnel construction
Loess tunnels during the operation period, especially heavy-duty railway tunnels, are prone to settlement and deformation of the base under the long-term train vibration load, which will lead to deterioration of driving conditions and endanger driving safety in severe cases

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
  • Construction method of water-rich loess tunnel capable of passing through loess gulley
  • Construction method of water-rich loess tunnel capable of passing through loess gulley
  • Construction method of water-rich loess tunnel capable of passing through loess gulley

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0146] Such as figure 1 Shown is a construction method for a water-rich loess tunnel passing through a loess flushing valley. The constructed loess tunnel includes a tunnel entrance section, a shallow buried tunnel section located in front of the tunnel entrance section, and a shallow tunnel section located in the shallow flushing valley. The front side tunnel section buried in the front side of the tunnel section, the shallow buried tunnel section of the flush valley is connected between the entrance section of the tunnel and the front tunnel section, the shallow buried tunnel section of the flush valley and the tunnel entrance The entrance sections are all shallow-buried tunnels; among them, the entrance section of the tunnel and the shallow-buried tunnel section of the flushing valley in the loess tunnel constructed are all located in the water-rich stratum;

[0147] The tunnel support structures of the entrance section of the tunnel, the shallow buried tunnel section of th...

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 construction method of a water-rich loess tunnel capable of passing through a loess gulley. The water-rich loess tunnel comprises a tunnel entrance entering section, a gulleyshallow-buried tunnel section and a front side tunnel section, wherein the gulley shallow-buried tunnel section is connected between the tunnel entrance entering section and the front side tunnel section; the construction method comprises the following steps: 1, constructing the tunnel entrance entering section; 2, constructing the gulley shallow-buried tunnel section; and 3, constructing the front side tunnel section. The construction method is simple in step, reasonable in design, simple and convenient in construction and excellent in using effect; the reasonable look-ahead reinforcing method and the tunnel base reinforcing method are selected to reinforce the tunnel soil mass according to different stratums of the tunnel entrance entering section, the gulley shallow-buried tunnel section and the front side tunnel section, the excavation process of the water-rich large-cross-section loess tunnel can be effectively ensured to be safe and reliable, and the stability of the dug formedtunnel can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a construction method for a water-rich loess tunnel passing through a loess flush valley. Background technique [0002] The valley is a trough-shaped depression formed by the erosion of the storm. The small one is only more than ten meters long, and the large one can reach tens of kilometers. Bursts are mostly formed by the collection of sheet flows on slopes, because the surface on slopes is not flat, so there are local low and flat depressions. In the depression, the flowing water particles on both sides and upstream of it converge to the lowest point in the middle to form a flow center line. When the water layer thickens, the flow velocity increases, and the scour capacity increases, the depression is gradually scoured and deepened to form a valley. and ravine water. According to the size and development shape of the valley, it can be divided into fou...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D9/14E21D11/10E21D11/18E21D20/00
CPCE21D9/001E21D9/14E21D11/10E21D11/18E21D20/00
Inventor 谢江胜吴小波束仁政曹运祥苗文怀马传明刘之涛张会安王建军高王峰申运涛李强张良
Owner CHINA RAILWAY 20 BUREAU GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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