Unlock instant, AI-driven research and patent intelligence for your innovation.

Novel roadway surrounding rock support deformation test method

A technology for surrounding rock support and deformation testing, which is used in measuring devices, measurement and instruments by measuring the changing force of optical properties of materials when they are stressed, and can solve the problems of large influence of human factors, complex detection methods, and inability to adapt to harsh conditions. environment and other issues to achieve the effect of reducing labor costs and real-time stress monitoring

Active Publication Date: 2021-02-09
LIAONING UNIVERSITY
View PDF16 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current pressure detection method in actual production generally uses pressure sensors to detect the stress of the coal seam. First, the pressure sensor is placed on the coal seam to be tested, and the electrical signal of the sensor is connected to the operating table, and then the detection is performed manually. This detection method has problems such as expensive artificial equipment, complicated detection methods, and inability to adapt to harsh environments; for the detection of deformation, the direct contact method of hanging steel rulers, copying, and equal direct contact is generally used. Although the operation method is simple, there are human factors that have too much influence disadvantages

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
  • Novel roadway surrounding rock support deformation test method
  • Novel roadway surrounding rock support deformation test method
  • Novel roadway surrounding rock support deformation test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A new method for testing the deformation of roadway surrounding rock support, comprising the following steps:

[0033] 1) Apply a layer of white reflective primer to the test area 1 of the roadway support device. The white reflective primer can eliminate the influence of the environment on the luminous performance and enhance the reflection effect. The main components of the white reflective primer are acrylic resin and directional reflective material titanium The white powder is mixed and prepared according to the ratio of parts by mass of 3:1; finally, the pressure-sensitive paint is sprayed with a spray gun; the pressure-sensitive paint is prepared, including a luminescent probe, a polymer binder and an organic solvent. Among them, the luminescent probe is 1-pyridine acid, the polymer binder is polydimethylsiloxane, and the organic solvent is acetone, and the mass volume ratio of its preparation is 12~15mg:1.4mg:35ml;

[0034] 2) After the pressure-sensitive coating ...

Embodiment 2

[0042] Such as Figure 4 As shown, this embodiment is an application case of this method to the deformation test of the surrounding rock of an unsupported roadway. On the basis of the application of Example 1, the pallet 14 is connected with the fixed rod 12 and the nut 13 on the area 1 to be tested, and the spray gun is used to The prepared pressure-sensitive paint is sprayed on the bottom surface of the transparent silica gel block 15, placed on the tray 14 after the paint is completely dry, and the top surface is pressed against the area 1 to be tested. The above steps are replaced with step 1) and step 2) of Example 1, and the rest of the steps are the same as in Example 1.

[0043] Using this method, the deformation test of surrounding rocks in multiple roadways can be carried out at the same time, and the measurement error caused by human factors can be effectively reduced by using the characteristics of the sensitive coating itself.

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 relates to a novel roadway surrounding rock support deformation test method. The method comprises the following steps: 1) spraying a pressure-sensitive coating on the surface of a roadway surrounding rock support by using a spray gun; 2) after drying, brushing a layer of transparent water-based dustproof coating on the obtained coating layer; 3) installing an excitation light sourcesystem, an image signal acquisition and processing system and a special tripod; 4) when roadway support and roadway wall coal rock deform, enabling the pressure-sensitive coating irradiated by the excitation light source to emit fluorescence with different intensities; 5) capturing fluorescence emitted by the coating by an image signal acquisition device, and transmitting a fluorescence signal toan image processing device through a signal transmission device; and 6) processing the fluorescence signal by using the image processing device to obtain images of the displacement field and stress field distribution change conditions of the roadway support and the roadway wall, and taking safety measures according to actual conditions. The method can quickly monitor the deformation of the roadwaysurrounding rock support, and has the advantages of small influence of human factors, accurate monitoring data and small influence of external factors.

Description

technical field [0001] The invention relates to a new method for testing deformation of roadway surrounding rock support, and belongs to the technical field of coal seam mechanical performance analysis. Background technique [0002] Coal mine dynamic disasters such as rock burst, coal and gas outburst are natural disasters that occur in coal mine production, which pose a major threat to the safety of workers' lives and property. Detection of roadway deformation and pressure distribution can provide evidence for accident prevention. guide. The current pressure detection method in actual production generally uses pressure sensors to detect the stress of the coal seam. First, the pressure sensor is placed on the coal seam to be tested, and the electrical signal of the sensor is connected to the operating table, and then the detection is performed manually. This detection method has problems such as expensive artificial equipment, complicated detection methods, and inability to...

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): G01B11/02G01B11/16G01L1/24
CPCG01B11/20G01B11/02G01L1/24
Inventor 徐连满李云昊潘一山于海波肖永惠吴哈萨段鑫秦志娇马柳
Owner LIAONING UNIVERSITY