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

Method and system for detecting filling effect of fissure core infiltration grouting

A detection method and grouting technology, which can be used in the direction of measuring devices, instruments, and nuclear magnetic resonance analysis, etc., and can solve the problems that the effect is not intuitive enough

Active Publication Date: 2022-02-01
WUHAN UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, commonly used grouting effect detection methods include drilling water injection test comparison method, electrical detection, electromagnetic detection, seismic wave detection, etc., but they all have limitations. reflection, the effect is not intuitive enough

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
  • Method and system for detecting filling effect of fissure core infiltration grouting
  • Method and system for detecting filling effect of fissure core infiltration grouting
  • Method and system for detecting filling effect of fissure core infiltration grouting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] The specific implementations of the method and system for detecting the filling effect of fissure core infiltration and grouting according to the present invention will be described in detail below in conjunction with the accompanying drawings.

[0062]

[0063] The tunnels along the Sichuan-Tibet Railway project pass through a large number of weak and broken sandstone surrounding rocks, and the surrounding rocks are affected by high ground stress and high ground temperature. In this example, the standard cylindrical sandstone samples in this section are selected for grouting test and filling Quantitative detection and evaluation of the effect, so as to guide the on-site grouting project. The experimental confining pressure is 5MPa, the experimental temperature is 30°C, and the experimental grouting pressure variables are 0.5MPa, 1.0MPa, and 1.3MPa.

[0064] Such as figure 1 As shown, the method for detecting the filling effect of fissure core infiltration and grouti...

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 a method and a system for detecting the filling effect of penetrating grouting in fractured cores, including: obtaining a columnar core sample of a rock mass to be tested for cutting; vacuuming and saturated water treatment of the sample to obtain a saturated sample; water on the surface of the sample, then NMR sampling was performed to measure the T of the water-saturated sample 2 Spectral distribution curve, calculate the NMR signal of the saturated sample; dry the sample; perform grouting test on the dried sample; perform NMR sampling on the sample to obtain the test at different times during the grouting process. kind of T 2 Spectral distribution curve and image of the distribution position of the slurry front inside the sample; according to T 2 Spectral distribution curve diagram to obtain the effective grouting volume ratio of the slurry at different times; according to the distribution position image of the slurry front inside the sample, obtain the distance between the slurry front and the grouting end face, and calculate the penetration grouting of the sample at each time. Effective grouting length ratio; calculated grouting filling rate.

Description

technical field [0001] The invention belongs to the technical field of roadbed soil improvement, and in particular relates to a method and a system for detecting the filling effect of fissure core seepage grouting. Background technique [0002] As underground engineering gradually extends to complex geological environments, grouting technology also needs to be continuously developed. As a common reinforcement method, grouting technology mainly uses cement-based grout or chemical grout to fill the cracks in the extruded rock mass, increase the compactness of the rock mass after solidification, and cement the original rock mass with cracks into a whole. It has the characteristics of strong practicability and wide application range. Grouting is a concealed project, coupled with the invisible characteristics of rock mass, it is difficult to evaluate the real-time quantitative evaluation of rock mass grouting filling effect. The effect of grouting reinforcement is also closely ...

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 Patents(China)
IPC IPC(8): G01N24/08
CPCG01N24/081
Inventor 吴志军张锶浪翁磊
Owner WUHAN UNIV
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