Super-large-cross-section tunnel-based surrounding rock classification method

A technology of surrounding rock grading and super large section, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of inability to accurately determine the surrounding rock grade of large-section tunnels

Inactive Publication Date: 2017-04-19
中建山东投资有限公司 +1
View PDF2 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fact that the sections of tunnels in our country have become larger and larger in recent years, and the surrounding rock conditions are complex, different grades of surrounding rock characteristics may appear

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
  • Super-large-cross-section tunnel-based surrounding rock classification method
  • Super-large-cross-section tunnel-based surrounding rock classification method
  • Super-large-cross-section tunnel-based surrounding rock classification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...

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 super-large-cross-section tunnel-based surrounding rock classification method. The super-large-cross-section tunnel-based surrounding rock classification method comprises the following steps of (1) obtaining a tunnel excavation section area S; (2) calculating and determining the number of excavation faces according to a formula S/50, and ensuring the excavation faces to be same in area, wherein S is the tunnel excavation section area in the step (1); (3) performing finite element numerical simulation analysis on practical engineering, and performing strength reduction on the excavation faces and expanded regions of the excavation faces to obtain different safety coefficients a1, a2, a3 and a4; (4) determining weight values b1, b2, b3 and b4 according to the reciprocals of the different safety coefficients a1, a2, a3 and a4 in the step (3); (5) performing zoning on the excavation faces on site; (6) calculating [BQ] of zones, and performing weighting according to [BQ] so as to obtain [BQ]A; and (7) finishing excavation face sketches according to an actual situation, and marking [BQ] and [BQ]A of the zones.

Description

technical field [0001] The invention relates to the technical field of surrounding rock classification, in particular to a surrounding rock classification method based on super-large-section tunnels. Background technique [0002] Surrounding rock classification is to divide the infinite rock mass sequence into finite categories with different degrees of stability according to the rock mass integrity and rock strength and other indicators. [0003] At present, the surrounding rock classification of highway tunnels in my country uses a combination of qualitative feature division and quantitative index division for comprehensive evaluation. The basic indicators of surrounding rock are rock hardness and rock mass integrity. The top two of integrity are expressed by the rock mass integrity coefficient Kv. When Kv has no actual measured value on site, it can be determined according to the rock mass volume joint number Jv. Due to the fact that the sections of tunnels in our countr...

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
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 王春河江华殷明伦江玉生樊祥喜
Owner 中建山东投资有限公司
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