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

Anhydrite tunnel simulation method and device considering expansion evolution

A technology of gypsum rock and evolution model, which is applied in the field of anhydrite tunnel simulation considering expansion evolution, can solve the problems that cannot reflect the influence of seepage, cannot reflect the evolution and spatial distribution characteristics of tunnel anhydrite surrounding rock expansion

Active Publication Date: 2020-03-20
CHINA POWER ENG CONSULTING GRP CORP EAST CHINA ELECTRIC POWER DESIGN INST
View PDF10 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in existing projects, the expansion force of a rock specimen is often obtained through laboratory tests, and it is used as an input parameter to simulate the deformation characteristics of expansive rock tunnels, which cannot reflect the influence of seepage on expansive rocks, let alone reflect the Evolution and spatial distribution characteristics of tunnel anhydrite surrounding rock expansion

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
  • Anhydrite tunnel simulation method and device considering expansion evolution
  • Anhydrite tunnel simulation method and device considering expansion evolution
  • Anhydrite tunnel simulation method and device considering expansion evolution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0022] figure 1 A flow chart showing an anhydrite tunnel simulation method considering expansion evolution provided by an embodiment of the present invention, see figure 1 , the anhydrite rock tunnel simulation method considering expansion evolution provided by the embodiment of the present invention includes:

[0023] S1, carry out the expansion test under the action of pressure water, and obtain the first derivative function of ...

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 provides an anhydrite tunnel simulation method and device considering expansion evolution, and the method comprises the steps: carrying out an expansion test under the action of pressurewater, and obtaining a first-order derivative function of water absorption and water pressure; introducing the first-order derivative function into a seepage differential equation, and establishing awater absorption-expansion evolution model in a seepage field; establishing a corresponding relationship between the thermal analysis model and a water absorption-expansion evolution model in the seepage field; utilizing the specific water volume, the relative density of the rock relative to water, the expansion stress, the elastic modulus of the material, the expansion modulus of the anhydrite,the expansion coefficient in the thermal analysis model and the actual expansion coefficient of the anhydrite; converting specific values of a heat conductivity coefficient, a boundary temperature ora heat flux, and expressions of a specific heat capacity and a thermal expansion coefficient in the thermal analysis model; and establishing a general calculation process, simulating a process of changing surrounding rock deformation and support stress along with time under the action of seepage and water absorption-expansion evolution by utilizing the general calculation process, and outputting asimulation result.

Description

technical field [0001] The invention relates to the technical field of tunnel simulation, in particular to an anhydrite tunnel simulation method and device considering expansion evolution. Background technique [0002] Seepage movement has a significant impact on the stability and deformation characteristics of expansive rock tunnels. Compared with other expansive rocks, the impact of seepage process on anhydrite tunnel is more obvious, which is reflected in two typical characteristics of anhydrite tunnel: long expansion time (including seepage time and water absorption time) and no obvious stable expansion pressure (Seepage causes water uptake to change over time). In engineering, the expansion force of a rock specimen is often obtained through laboratory tests, and it is used as a fixed input parameter to simulate the deformation characteristics of the expansion rock tunnel. [0003] However, in existing projects, the expansion force of a rock specimen is often obtained ...

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): G01N33/24G01N15/08G01N25/16G01N25/20
CPCG01N33/24G01N15/082G01N25/16G01N25/20
Inventor 吴建勋王庶懋
Owner CHINA POWER ENG CONSULTING GRP CORP EAST CHINA ELECTRIC POWER DESIGN INST
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