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Testing device for measuring radial deformation of single-axis compression rock at high temperature

A uniaxial compression and radial deformation technology, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems of radial deformation measurement failure, annular deformation gauges and strain gauges do not have high temperature resistance properties, etc. The device is simple and the effect of ensuring stability

Inactive Publication Date: 2019-06-28
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under high temperature conditions, annular deformation gauges and strain gauges do not have high temperature resistance properties, resulting in failure of radial deformation measurement

Method used

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  • Testing device for measuring radial deformation of single-axis compression rock at high temperature
  • Testing device for measuring radial deformation of single-axis compression rock at high temperature
  • Testing device for measuring radial deformation of single-axis compression rock at high temperature

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0031] Embodiment 1: Uniaxial compression test of rock under high temperature

[0032] Ⅰ. Mounting of specimens. The test device proposed by the present invention should cooperate to be installed in such as figure 2Then put the prepared sample on the high temperature resistant base (15), connect the high temperature resistant extension rod (4) and the axial pressure head (17), and install it on the high temperature resistant extension rod (4) Cooling device (3); start the axial pressure loading device, lower the axial pressure head, and make the lower end of the high-temperature-resistant extension rod (4) lightly contact the upper end surface of the sample (1) through the high-temperature-resistant spherical seat (5) Together;

[0033] Ⅱ. Installation of temperature rise temperature control device and radial deformation measurement device. Set the temperature control device according to the figure 1 Install as shown, and at the same time pass the quartz rod (10) through ...

Embodiment approach 2

[0042] Embodiment 2: Uniaxial creep test of rock under high temperature conditions

[0043] Assume that the loading method used in the creep test is dead load and loading, and the load size is F 0 , with a duration of t Hour. The specific operation method is as follows:

[0044] Ⅰ. Mounting of specimens. The test device proposed by the present invention should cooperate to be installed in such as figure 2 Then put the prepared sample on the high temperature resistant base (15), connect the high temperature resistant extension rod (4) and the axial pressure head (17), and install it on the high temperature resistant extension rod (4) Cooling device (3); start the axial pressure loading device, lower the axial pressure head, and make the lower end of the high temperature resistant extension rod (4) lightly contact the upper end surface of the sample (1) through the high temperature resistant spherical seat (5) Together.

[0045] Ⅱ. Installation of temperature rise tempera...

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Abstract

The invention discloses a testing device for measuring the radial deformation of single-axis compression rock at a high temperature and belongs to laboratory testing equipment. The testing device comprises an axial pressure exerting device, a heating temperature control device, a radial displacement measurement device and a temperature / displacement acquisition device, wherein radial displacement of a test sample is mainly tested under a high temperature condition by enabling a quartz rod to penetrate through a heating device to prop against the middle position of the test sample, connecting the quartz rod with an external LVDT (Linear Variable Differential Transformer) displacement sensor and by using the high temperature resistant quartz rod as a medium. By adopting the device, high temperature (1000 DEG C) single-axis rock mechanical testing under a long-term condition can be achieved, real-time dynamic acquisition on radial deformation can be achieved, and the device is simple and reliable, good in long-term stability and good in automatism.

Description

technical field [0001] The invention relates to a test device for measuring the radial deformation of uniaxially compressed rock at high temperature, which belongs to the field of rock mechanics, and in particular relates to real-time measurement of the radial deformation of uniaxially compressed rock at high temperature. technical background [0002] With the continuous increase of resource development in our country, deep rock mechanics has become a research hotspot. For deep rock mechanics problems, it is inevitable to consider the influence of temperature on rock mechanical properties. Especially in rock engineering such as underground coal seam gasification, oil shale or low-metamorphic coal in-situ heat injection mining, deep-burial treatment of high-level radioactive nuclear waste, and development and utilization of geothermal resources, the rock mass involved in these projects All will be subjected to high temperature. Under such conditions, it is necessary to study...

Claims

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Application Information

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IPC IPC(8): G01N3/18
Inventor 梁卫国曹孟涛胡耀青王岐耿毅德武鹏飞
Owner TAIYUAN UNIV OF TECH
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