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

Construction method for grouting reinforcement of bad geological section of tunnel

A construction method and technology for tunnels, which are applied in tunnels, tunnel linings, underground chambers, etc., can solve problems such as damage to steel bars in lining structures, and achieve the effects of simple construction and installation, improved foundation treatment quality, and high drilling accuracy.

Inactive Publication Date: 2017-09-05
SINOHYDRO BUREAU 14 CO LTD
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the construction of underground engineering, due to the change of geological conditions, it is often encountered in the construction of the geological surrounding rock fracture zone and alteration zone. In the past, the construction of the project used concrete lining. This method is likely to cause waste holes and cause varying degrees of damage to the steel reinforcement of the lining structure; therefore, in order to ensure the safety of the concrete structure of the high-pressure underground tunnel and effectively strengthen the effect of the surrounding rock consolidation treatment, how to solve the quality accuracy of the grouting hole drilling and prevent subsequent grouting drilling Hole construction puts forward new requirements for the damage of high-pressure waterway stress steel bars and the disturbance of concrete

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 for grouting reinforcement of bad geological section of tunnel
  • Construction method for grouting reinforcement of bad geological section of tunnel
  • Construction method for grouting reinforcement of bad geological section of tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] A construction method for grouting reinforcement of a section of a tunnel with unfavorable geological conditions, the construction structure of the tunnel is as follows Figure 1-3 shown, including the following:

[0022] Step (1), grooving of broken zone and altered zone: After the tunnel excavation is completed, according to the actual exposure of the surrounding rock of the tunnel, the broken zone and altered zone will be counted and marked, and then...

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 for grouting reinforcement of a bad geological section of a tunnel and aims at providing the construction method for grouting reinforcement of the bad geological section of the tunnel with a good grouting reinforcement effect. The method comprises the steps of (1) grooving a crushing zone and an alteration zone; (2) embedding a guide tube; and (3) drilling and grouting. The construction method has the advantages that the drilling time is shortened, the construction method is high in drilling accuracy, high in construction efficiency and high in quality guarantee rate, a concrete lining and a surrounding rock structure are not affected, and the anti-seepage effect of consolidation grouting is good.

Description

technical field [0001] The invention relates to the technical field of foundation reinforcement treatment for broken zones and altered zones of surrounding rocks of underground tunnels, in particular to a construction method for grouting reinforcement of unfavorable geological sections of tunnels. Background technique [0002] In the construction of underground engineering, due to the change of geological conditions, it is often encountered in the construction of the geological surrounding rock fracture zone and alteration zone. In the past, the construction of the project used concrete lining. This method is likely to cause waste holes and cause varying degrees of damage to the steel reinforcement of the lining structure; therefore, in order to ensure the safety of the concrete structure of the high-pressure underground tunnel and effectively strengthen the effect of the surrounding rock consolidation treatment, how to solve the quality accuracy of the grouting hole drilling...

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): E21D11/10E21B7/04E21B33/13
CPCE21D11/10E21B7/04E21B33/13
Inventor 朱育宏李辉万晟刘芳明和丽钢蔡斌陈继杨李前昊华石坤马勋才刘伟陈绍友王凯谭力吴娟娥王林郭际矗余双祥樊旭东
Owner SINOHYDRO BUREAU 14 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