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

Preparation method of a fracture developer and its application method for rock mass fracture detection

A rock mass fissure and developer technology, which is applied to measuring devices, instruments, scientific instruments, etc., can solve the problems of weakening rock mass strength, a large number of drilling holes, and high cost

Inactive Publication Date: 2020-10-27
WUHAN UNIV
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of the crack network seriously weakens the strength of the rock mass, which brings great difficulties to the construction of rock mass engineering: on the one hand, practice shows that the instability and damage of rock mass engineering are closely related to the expansion and penetration of internal cracks; on the other hand, due to There is no better method to detect the distribution of fracture networks in actual rock mass, so researchers usually can only assume the distribution form of fracture networks when analyzing underground engineering, which leads to numerical simulation results that cannot accurately reflect fractured rock mass The actual deformation and rock mass stability of
[0003] According to the records of existing data, Li Weiteng and others proposed a three-dimensional detection system and detection method for rock mass cracks (Chinese patent application number is CN2016100350771). In this method, several medium injection holes and medium injection holes are constructed in the rock mass Parallel detection holes form a three-dimensional deployment control state sensor in the fractured rock mass, but this method requires a large number of drilling holes, the actual application is more complicated, and the cost is higher; Sun Bi et al. proposed a method based on CT dynamic scanning The three-dimensional reconstruction method of fracture mesoscopic evolution (Chinese patent application number is CN2017103026825), but this method can only operate and observe indoor samples, and there is still a long way to go in engineering
It can be seen that there are still many defects in the existing rock mass crack detection methods.

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
  • Preparation method of a fracture developer and its application method for rock mass fracture detection

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] A preparation method of a crack developer, which comprises the following steps:

[0048] S01: Prepare the crack developer masterbatch, pre-mix the nano-metal powder with 3 to 15 parts by weight and the microcrystalline graphite material with 1 to 5 parts by weight through a powder high-speed mixer to obtain The powder mixture is used as the crack developer masterbatch;

[0049] S02: Prepare crack developer fillers, add barium titanate to the polymer matrix, and perform 20 to 30 times of solid-phase shear milling to prepare high-dielectric polymers as crack developer fillers, wherein the cracks The volume fraction of the barium titanate in the developer filler is 0.3 to 0.5;

[0050] S03: Add 1 to 5 parts by weight of the cracked developer masterbatch and 0.2 to 0.5 parts by weight of the cracked developer filler into a high-speed stirring disperser, and stir for 5 to 15 minutes to obtain Fracture developer composites;

[0051] S04: adding distilled water to the composi...

Embodiment 1

[0065] Embodiment 1, a preparation method of a crack developer, which comprises the following steps:

[0066] S01: Prepare crack developer masterbatch, pre-mix 3 parts by weight of iron powder and 1 part by weight of chopped carbon fiber through a powder high-speed mixer to prepare a powder mixture as crack developer masterbatch grain;

[0067] S02: Prepare crack developer fillers, add barium titanate to polypropylene, and perform 20 times of solid phase shear milling to prepare high dielectric polymers as crack developer fillers, wherein the crack developer fillers The volume fraction of the barium titanate is 0.3, and the volume fraction of the polypropylene is 0.7;

[0068] S03: Add 1 part by weight of the cracked developer masterbatch and 0.2 parts by weight of the cracked developer filler into a high-speed stirring disperser, and stir for 5 minutes to obtain a cracked developer composite material;

[0069] S04: adding distilled water to the composite material of the cra...

Embodiment 2

[0071] Embodiment 2, a preparation method of a crack developer, which comprises the following steps:

[0072] S01: Prepare cracked developer masterbatch, pre-mix 3 parts by weight of copper powder and 1 part by weight of carbon fiber particles through a powder high-speed mixer, and prepare a powder mixture as cracked developer masterbatch ;

[0073] S02: Prepare crack developer fillers, add barium titanate to polypropylene, and perform 25 times of solid-phase shear milling to prepare high dielectric polymers as crack developer fillers, wherein the crack developer fillers The volume fraction of the barium titanate is 0.4, and the volume fraction of the polypropylene is 0.6;

[0074] S03: Add 3 parts by weight of the cracked developer masterbatch and 0.5 parts by weight of the cracked developer filler into a high-speed stirring disperser, and stir for 5 minutes to obtain a cracked developer composite material;

[0075] S04: adding distilled water to the composite material of t...

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

PropertyMeasurementUnit
concentrationaaaaaaaaaa
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method for a fracture developer and a method for applying the fracture developer to the detection of rock fractures. The preparation method comprises the following steps: S01, uniformly mixing nanometer metal powder with a microcrystalline graphite material in advance to obtain a fracture developer masterbatch; S02, adding barium titanate into a polymer matrix and performing solid-phase shearing and milling to obtain a fracture developer filler; S03, adding the fracture developer masterbatch and the fracture developer filler into a high-speed stirring disperser, and carrying out stirring to obtain a fracture developer composite material; S04, adding distilled water into the fracture developer composite material, and performing diluting and high-speedstirring to obtain a mixed solution; and S05, adding a lubricant and a thickener into the mixed solution, and performing stirring at a high speed to obtain a turbid liquid which is the fracture developer. The invention has the beneficial effects that the fracture developer has the characteristics of a high dielectric constant, low dielectric loss, good stability and the like; and the turbid liquidhas good uniformity, high adhesion, good fluidity, identifiability, high portability, and other performance.

Description

technical field [0001] The invention relates to the technical field of nondestructive testing, in particular to a preparation method of a fissure developer and an application method for detecting rock mass fissures. Background technique [0002] With the rise and development of underground projects such as underground storage of natural gas, underground disposal of high-level radioactive nuclear waste, and underground tunnels, the stability of underground rock mass has become a key factor in solving engineering problems. However, the complex fracture network of the rock mass leads to non-uniform and nonlinear anisotropy in the engineering structure and mechanical properties of the rock mass. The existence of the crack network seriously weakens the strength of the rock mass, which brings great difficulties to the construction of rock mass engineering: on the one hand, practice shows that the instability and damage of rock mass engineering are closely related to the expansion ...

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): G01N27/22
CPCG01N27/221
Inventor 唐旭海刘泉声李平
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