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Test method and device based on rock uniaxial compression

A uniaxial compression and test method technology, applied in measuring devices, using stable tension/pressure testing materials, instruments, etc., can solve problems such as reducing the degree and possibility of rock bursts, and achieve stable pressure and gas state. , the effect of reducing air pressure

Pending Publication Date: 2021-04-27
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology

[0004] In order to solve the technical problems of rock temperature control and loading in the existing uniaxial test, a rock uniaxial test method and device have been developed. control test, so as to obtain the test results of reducing the degree and possibility of rockburst

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  • Test method and device based on rock uniaxial compression
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  • Test method and device based on rock uniaxial compression

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, where the schematic embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0034] Such as figure 1 As shown, a kind of test device based on rock uniaxial compression of the present invention, comprises the sealing test box 3 that places on the platform 1, is provided with base 2, upper cushion block 5, lower cushion block 6 and The rock sample 7, the rock sample 7 is placed on the lower block 6, the upper block 5 is placed on the top of the rock sample 7, and the load is applied on the upper block 5 to deform the rock sample 7. The rock sample 7 is provided with a stress-strain sensing sheet 11 and a temperature sensing sheet 9 , the stress-strain sensing sheet 11 is connected to a stress-strain data acquisition instrument 12 , and the temperature sensing sheet ...

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Abstract

The invention discloses a test method and device based on rock uniaxial compression, and the method comprises the steps: controlling the constant-speed heating rate in a sealed test box, and keeping the temperatures of all parts in a rock sample consistent with the surface temperature of rock; uniformly applying a load to the upper cushion block at a displacement loading rate, and uniformly loading until the rock sample is completely damaged; calculating the stress-strain value of the rock sample according to the strain data obtained by the sensor, obtaining the longitudinal and transverse strain of the rock sample under the corresponding load, and drawing a stress-strain relationship curve about the rock sample; and obtaining the thermal strain increment and the thermal stress increment of the rock sample under the temperature condition. According to the invention, a uniaxial temperature control test of rock compressive strength change under temperature control can be realized, so that a test result for reducing rockburst degree and possibility is obtained.

Description

technical field [0001] The invention relates to a rock sample temperature control test device, in particular to a test method and device based on rock uniaxial compression. Background technique [0002] With the continuous development of deep-buried tunnels, the harsh engineering environment of "three highs and one disturbance" and the complex physical and mechanical properties of the demonstration itself have caused more and more rockbursts and surrounding rock deformations to occur in different degrees. During the monitoring process, it was found that the maximum temperature of the surrounding rock in some high-temperature tunnels can reach 130°C, and the level of rockbursts that occur is higher than that in common tunnels, which poses a severe test to the construction of the project. A large amount of data obtained by combining field measurements and laboratory tests can also show that temperature has a great influence on the mechanical properties of rocks. Therefore, it ...

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Application Information

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IPC IPC(8): G01N3/18G01N3/06
CPCG01N3/06G01N3/18G01N2203/0019G01N2203/0075G01N2203/0226G01N2203/0252G01N2203/0676G01N2203/0694
Inventor 邵珠山黄新彩薛涛朱意明
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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