Radial resistance controllable supporting structure suitable for large-deformation tunnel and supporting method

A technology of supporting structure and large deformation, applied in tunnels, tunnel linings, earthwork drilling, etc., can solve the problems of limited displacement release of resistor limiters, uneconomical construction, and poor adaptability to non-uniform deformation conditions. Large deformation adaptability, strong deformation ability, and the effect of adapting to local large deformation

Active Publication Date: 2019-05-07
SOUTHWEST JIAOTONG UNIV
View PDF10 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resistance limiter (yield unit) releases the circumferential displacement. For super-large deformation tunnels, since the displacement release of a single resistance limiter (yield unit) is limited, more resistance limiters (yield units) are required for displacement release. resulting in uneconomical construction
The use of a buffer material layer to release the displacement of the surrounding rock cannot effectively control the radial support resistance, and its adaptability to the working conditions of non-uniform deformation is not strong

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
  • Radial resistance controllable supporting structure suitable for large-deformation tunnel and supporting method
  • Radial resistance controllable supporting structure suitable for large-deformation tunnel and supporting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] 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.

[0026] The purpose of the present invention is to provide a radial resistance controllable support structure and support method suitable for large deformation tunnels, so as to solve the problems in the prior art, so that the support structure can adapt to super large deformation tunnels and non-uniform deformation The large deformation tunnel can evenly release the surrounding rock pressure, improve the safety of the tunnel, and the cost is low.

[0027] The ...

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 radial resistance controllable supporting structure suitable for a large-deformation tunnel and a supporting method, and belongs to the technical field of tunnel engineeringconstruction. The structure comprises a primary spraying concrete layer, an inflatable cushion and a steel plate, wherein the primary spraying concrete layer is arranged on the surface of a surrounding rock in a tunnel, the inflatable cushion is fixed on one side of the steel plate, one side of the steel plate, provided with the inflatable cushion, is arranged close to the primary spraying concrete layer, an arch springing of the steel plate is fixed to the surrounding rock, the inflatable cushion is inflated to a safe pressure value, and a secondary lining is arranged on one side of the steelplate, which is not contacted with the inflatable cushion; the inflation cushion is provided with an inflation valve and a constant pressure deflation valve. According to the invention, the supporting structure can adapt to an ultra-large-deformation tunnel and a non-uniformly-deformed large-deformation tunnel, the surrounding rock pressure is uniformly released, the safety of the tunnel is improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering construction, in particular to a radial resistance controllable support structure and a support method suitable for large deformation tunnels. Background technique [0002] At present, for the release of surrounding rock displacement in large-deformation tunnels, resistance limiters (yield units) or buffer material layers are mostly used to release the deformation and pressure of surrounding rock. The resistance limiter (yield unit) releases the circumferential displacement. For super-large deformation tunnels, since the displacement release of a single resistance limiter (yield unit) is limited, more resistance limiters (yield units) are required for displacement release. This leads to uneconomical construction. The use of buffer material layer to release the displacement of surrounding rock cannot effectively control the radial support resistance, and its adaptability to non-uniform ...

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): E21D11/10E21D11/18
Inventor 章慧健苗龙刚朱勇郑余朝
Owner SOUTHWEST JIAOTONG UNIV
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
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap