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

Drilling and blasting tunnel structure adopting prefabricated inverted arch

A prefabricated assembly and tunnel structure technology, which is applied in tunnels, tunnel linings, mining equipment, etc., can solve problems affecting the normal operation of high-speed rail, cracking and deformation of ballast beds, and speed limit of tunnels, so as to optimize tunnel section type and structural size, and ensure Effects of early sealing and improving the degree of mechanization

Pending Publication Date: 2019-04-23
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to the statistics of the railway tunnels currently in operation, especially the high-speed railway tunnels, some tunnels have problems such as bulging of the bottom arch, mud and mud, which will lead to cracking and deformation of the ballast bed in severe cases, resulting in the speed limit of the tunnel and affecting the normal operation of the high-speed railway.

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
  • Drilling and blasting tunnel structure adopting prefabricated inverted arch
  • Drilling and blasting tunnel structure adopting prefabricated inverted arch
  • Drilling and blasting tunnel structure adopting prefabricated inverted arch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention will be described in detail below in combination with specific embodiments.

[0032] Prefabricated buildings are a major change in construction methods, which are conducive to saving resources, reducing construction pollution, improving the working environment, increasing production efficiency, and promoting standardized construction. Drilling and blasting tunnels can replace the traditional inverted arch trestle model after adopting the assembled inverted arch. After the inverted arch is prefabricated and assembled, it can be closely followed by the excavation tunnel face to achieve rapid installation and construction. While ensuring the quality of the inverted arch, it also improves Tunnel security. Due to various factors, the current construction method of drilling and blasting tunnels is still mainly cast-in-place, and the proportion of drilling and blasting prefabricated tunnel construction is still very low, which is still far behind the nati...

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 relates to a drilling and blasting tunnel structure adopting a prefabricated inverted arch. An arch part is an initial support of a tunnel; a secondary lining of a cast-in-place arch wall is arranged in the initial support of the tunnel; the lower end of the secondary lining of the cast-in-place arch wall and a fabricated inverted arch prefabricated block at the bottom are connectedinto a ring through a cast-in-place inverted arch lining; the end parts of both sides of the fabricated inverted arch prefabricated block are provided with fabricated inverted arch block two-side expansion ends; and the end faces are provided with tenons which are in butt joint with blind mortises on the end faces of the cast-in-place inverted arch lining. The drilling and blasting tunnel structure meets the requirements for the basic structural form of the tunnel fabricated inverted arch, and the inverted arch structure is prefabricated in factory-like and standardization modes, so that the reliable quality is ensured, and the quality, strength and other properties of a prefabricated component are much better than those of a cast-in-place structure.

Description

technical field [0001] The invention belongs to the technical field of tunnels and underground engineering, and in particular relates to a drill-and-blast tunnel structure using prefabricated and assembled inverted arches. Background technique [0002] With the continuous improvement of construction technology, construction level and construction requirements, more and more new technologies, new processes and new construction methods are applied to the construction of tunnels and underground projects. Prefabricated buildings are a major change in construction methods, which are conducive to saving resources, reducing construction pollution, improving the working environment, improving labor production efficiency, improving standardized operations, and ensuring quality and safety levels. However, limited by various factors, the current drilling and blasting construction method of tunnel construction is still mainly cast-in-situ, and the proportion of prefabricated tunnel cons...

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): E21D9/00E21D11/10
CPCE21D9/006E21D11/105E21D11/107
Inventor 王飞雷升祥黄双林赵晓勇刘建红李国良靳宝成
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST 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