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Rock tensile test device under confining pressure effect and test method thereof

A tensile test and rock technology, applied in the direction of measuring devices, using stable tension/pressure testing material strength, instruments, etc., can solve the problems of weak practicability and poor accuracy of results, and achieve reduced test costs, easy control, Simple operation effect

Active Publication Date: 2017-03-29
HEBEI UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a device with simple structure, accurate test results, which can carry out rock tensile test under arbitrary confining pressure and its test method, so as to solve the problems of weak practicability and poor result accuracy in the prior art, and achieve Tensile test of rock under confining pressure on a shaft testing machine

Method used

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  • Rock tensile test device under confining pressure effect and test method thereof
  • Rock tensile test device under confining pressure effect and test method thereof
  • Rock tensile test device under confining pressure effect and test method thereof

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Embodiment 1

[0060] This embodiment discloses a rock tensile test device under confining pressure, including component I1, component II2, connecting plate 3, backing plate 4, slider I5, and slider II50.

[0061] see figure 2 , image 3 and Figure 4 , the member I1 includes a force transmission column I101, a beam I102 and a force transmission column II103. The beam I102 is connected between the force transmission column I101 and the force transmission column II103, and the upper surfaces of the three are flush. The force transmission column I 101, the beam I 102 and the force transmission column II 103 are integrated. The force transmission column I101, the beam I102 and the force transmission column II103 enclose the semi-enclosed space IS1.

[0062] The cross-section of the beam I102 is straight-sided elliptical (that is, the two opposite sides of the rectangle are replaced by two identical arcs, and the area of ​​the newly formed figure is larger than the area of ​​the original re...

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Abstract

The invention provides a rock tensile test device under a confining pressure effect and a test method thereof. The device comprises a component I, a component II, a connecting plate and a base plate, wherein the component I is equipped with a slide rail; the component II is equipped with a slide slot; under the restricting effect of the slide rail and the slide slot, the component II only can move along the vertical direction, and meanwhile, the pressure on a test machine is converted into a pull force for a sample; and the ball twisting form connection of a pull head and a cross beam can guarantee the stress acting on the center of the sample. The rock tensile test device provided by the invention has a simple structure, is reliable in test result, is capable of performing a rock tensile test under the confining pressure effect on a present tri-axial test machine, and is capable of greatly saving the test cost.

Description

technical field [0001] The invention relates to the field of rock mechanics, in particular to a device and a test method for performing a rock tensile test under confining pressure. Background technique [0002] Under natural conditions, underground rock mass is generally in a state of triaxial compression. However, after the excavation of roadways and chambers, the surrounding rock will have a strong unloading effect, and the ground stress will be redistributed. Within a certain range, the surrounding rock will produce tensile stress in the radial direction of the roadway, while in the tangential direction and strike direction of the roadway, the surrounding rock still bears compressive stress. The tensile stress in the radial direction of the roadway is an important factor that causes the surrounding rock to crack or even lose stability. The research on the tensile mechanical properties of rock under confining pressure is of great significance to the control of surroundi...

Claims

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Application Information

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IPC IPC(8): G01N3/10
CPCG01N3/10G01N2203/0017G01N2203/0048
Inventor 黄达朱谭谭岑夺丰曾彬陈福勇
Owner HEBEI UNIV OF TECH
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