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

Secondary lining split mounting type blocking head device for metro underground excavation tunnel

A secondary lining and assembled technology, which is applied in the direction of tunnel lining, tunnel, shaft lining, etc., can solve the problems of easy disconnection of steel bars at construction joints, unreasonable structure, and inadequate installation of waterproof materials, etc., to achieve simple operation and saving Cost, good waterproof effect

Active Publication Date: 2012-05-09
CHINA RAILWAY 12TH BUREAU GRP +1
View PDF8 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing secondary lining head stopper is unreasonable in structure, the steel bars at the construction joints are easily broken and the waterproof material is not installed in place, and the present invention provides a secondary lining assembled head stopper for underground excavation tunnels

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
  • Secondary lining split mounting type blocking head device for metro underground excavation tunnel
  • Secondary lining split mounting type blocking head device for metro underground excavation tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The assembled head stop device for the secondary lining of underground excavation tunnels in subways includes arc-shaped head stop steel plates. The inner arc side of the base body 1 has a keyway-shaped bolt hole 3, and the bolt hole 3 is screwed with a bolt connected to the outer arc section of the second lining trolley, and the inner side of the head plate is provided with an arc-shaped steel bar 4 fixed to the section of the second lining trolley , the reinforcement sleeve 5 arranged radially is evenly distributed on the steel bar 4, and the reinforcement sleeve 5 is provided with a reinforcement steel pipe 6 on one side of the rear surface of the head-stop steel plate. Wooden wedge, galvanized water-stop steel plate 7 is spot-welded with the outer circular arc end face of the head-stop steel plate. In the specific implementation process, the distance between the ends of the second lining trolley is 50cm, and the Φ50 reinforcement sleeve 5 is preset and reinforced wi...

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 particularly relates to a secondary lining split mounting type blocking head device for a metro underground excavation tunnel, which resolves the problems that due to an unreasonable structure of an existing secondary lining blocking head device, reinforced steel bar at construction joints is prone to be broken and waterproof materials cannot be installed in the right positions. The secondary lining split mounting type blocking head device comprises an arc blocking head steel plate which is formed of a plurality of steel plate base bodies, wherein a longitudinal reinforced steel bar clamp groove is arranged at the outer arc edge of each steel plate base body, a key groove shaped bolt hole is arranged on one side of the inner arc of each steel plate base body, a bolt is screwed in the bolt hole, the inner side of the blocking head base body is provided with an arc reinforced steel bar fixed with the section of a secondary lining trolley, radially arranged reinforced sleeves are evenly distributed and fixed on the reinforced steel bar, reinforced steel tubes are arranged in the reinforced sleeves, wood wedges are plugged between the reinforced steel tubes and the blocking head steel plates, and a galvanized water stopping steel plate is welded on an outer arc end face of the blocking head steel plate in point mode. The secondary lining split mounting type blocking head device is reasonable in structural design, can buffer force deformation, is supported and fixed by the reinforced steel tubes, is good in waterproof effect, and has the advantages of being simple in process, convenient in operation and capable of saving cost.

Description

technical field [0001] The invention relates to a head stop device for underground excavation tunnels of subways, in particular to a secondary lining assembled head stop device for underground excavation tunnels of subways. Background technique [0002] The shield tunneling method is more and more chosen for underground excavation of subway tunnels. However, the shield method is not suitable for construction in uneven ground; it cannot be applied to the construction of complex sections such as turnback lines and crossover lines; the construction of sections with small line spacing and pile foundation underpinning sections. However, the mining method is still often selected in the medium and slightly weathered layers, uneven distribution of strata, shallow buried underground excavation sections and unsuitable shield tunneling construction sites. The construction of the secondary lining has naturally become an important link in the construction of the mining method. [0003]...

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): E21D11/14E21D11/38
Inventor 刘旭辉李建军郝晓康郭英
Owner CHINA RAILWAY 12TH 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