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

Construction method of tunnel ventilation opening structure under weak surrounding rock condition

A technology for tunnel ventilation and weak surrounding rock, applied in mine/tunnel ventilation, tunnel, tunnel lining and other directions, can solve the cracking and instability of the excavated supporting structure, the effective auxiliary construction channel of the difficult main hole, and the freedom of difficult construction vehicles. The problem of entering and exiting the main hole, etc., achieves the effect of wide stratum applicability, eliminating cumbersome processing, and increasing excavation work surface.

Pending Publication Date: 2022-08-05
CCCC SECOND HIGHWAY CONSULTANTS CO LTD
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (2) High construction risk and low structural safety
Due to multiple excavation interference, it is easy to cause cracking and instability of the excavated support structure; there are many straight wall structures at the intersection, which is not conducive to the structural force, and the structural safety is low
[0005] (3) It is not conducive to the excavation of the auxiliary main hole
The traditional scheme is difficult to realize the free entry and exit of construction vehicles into and out of the main tunnel, making it difficult to serve as an effective auxiliary construction channel for the main 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
  • Construction method of tunnel ventilation opening structure under weak surrounding rock condition
  • Construction method of tunnel ventilation opening structure under weak surrounding rock condition
  • Construction method of tunnel ventilation opening structure under weak surrounding rock condition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention. In the description of the embodiments of the present invention, it should be noted that the terms "first" and "second" in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the invention described herein can be practiced in s...

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 tunnel ventilation opening structure under a weak surrounding rock condition, the ventilation opening structure adopts a side expansion type cross connection mode, an excavation section adopts a curved wall or an arched section, a connection channel and a main hole are not interfered in excavation, and a gradual change section does not exist in excavation; the section of the widened belt is the same as the section of the tunnel emergency parking strip, and the emergency parking strip can be used for lining a trolley and a template; active excavation operation is assisted through the connecting channel, the excavation working face of the main hole can be increased, and the construction period is shortened. When the ventilation opening structure is located in weak surrounding rock and needs to enter the main tunnel from the connection channel to assist excavation of the main tunnel, the ventilation opening structure is constructed through the construction method, and good safety guarantee and construction efficiency can be obtained.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a construction method for a tunnel vent structure under the condition of soft surrounding rock. Background technique [0002] Due to the needs of disaster prevention, rescue and driving comfort, most road tunnels must be equipped with ventilation shafts (shafts or inclined shafts) for ventilation. In the underground, the tunnel and the ventilation shaft are connected by a communication channel. The construction method of the tunnel ventilation structure in the prior art is: excavating a certain height above the main hole of the intersection section, sending the wind into the tunnel or extracting the smoke and dust out of the main hole , this construction method mainly has the following shortcomings: [0003] (1) The construction is complicated. It is difficult to excavate and form the intersection at one time, and it is usually necessary to construct the communicatio...

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): E21D9/14E21D11/10E21F1/00
CPCE21D9/14E21D11/10E21D11/105E21D11/102E21F1/003Y02E10/20
Inventor 毛红飞柯小华张涛刘继国拓勇飞尹术军高文渊郭进雪赵雪萌汪德鹏
Owner CCCC SECOND HIGHWAY CONSULTANTS CO LTD
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