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Multi-functional mechanical property tester of rock

A technology of rock mechanics and testing machine, applied in the direction of testing material strength by applying stable bending force, testing material strength by applying stable shear force, testing material strength by applying stable tension/pressure, etc., can solve the problem of loading machine The unreasonable design of the frame structure makes it impossible to test and test, and the use efficiency of the testing machine is low, so as to achieve the effects of reasonable force, increased rigidity, convenient installation and safety.

Active Publication Date: 2014-11-12
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the status quo of rock mechanical performance testing technology, the purpose of the present invention is to provide a test machine that can perform direct shearing, uniaxial compression, uniaxial tension, bending fracture, triaxial compression, etc. of rock specimens on a testing machine. A multi-functional rock mechanical performance testing machine for mechanical performance testing experiments, to solve the problem that existing rock testing machines cannot perform tests of different types of rock mechanical properties on one testing machine due to the unreasonable design of the loading frame structure Testing, low efficiency of testing machine, etc.

Method used

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  • Multi-functional mechanical property tester of rock

Examples

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Effect test

Embodiment 1

[0023] The multifunctional rock mechanics testing machine of this embodiment has a structure as attached figure 1 , 2 As shown in and 3, its composition includes an eight-sided annular integral loading frame 1, which is placed on the bottom wall of the annular inner wall of the loading frame for carrying the bearing base 4 of the rock test piece 8, and is used to improve the distribution of the shear load. The upper shear box 6 connected to the upper part of the rock test piece and the lower shear box 7 enclosing the lower part of the rock test piece are arranged on the top wall of the annular inner wall of the loading frame and act vertically downward on the rock test piece placed on the bearing base 4. The rock test piece is fixed in the first actuator 2 in the loading frame, and the second actuator 3 that acts on the rock test piece horizontally on the vertical wall surface of the annular inner wall of the loading frame is arranged on the loading frame. On the vertical wal...

Embodiment 2

[0026] attached Figure 4It is a schematic diagram of implementing a uniaxial compression test on a rock specimen by using the multifunctional rock mechanical performance testing machine of the present invention. The structure of the testing machine is basically the same as that of Example 1, except that the second actuator 3 is shrunk to the loading frame during the test In the body, the passively loaded support rod 5, the upper shear box 6 and the lower shear box 7 were removed, and the rock specimen for the uniaxial compression test was placed between the first actuator 2 and the bearing base 4, and the A lower bearing plate 13 is placed between the test piece 8 and the bearing base 4 , and an upper bearing plate 12 is placed between the rock test piece 8 and the first actuator 2 . The test is carried out by applying a compression load by the first actuator 2, so as to measure the mechanical properties of the rock specimen against uniaxial compression.

Embodiment 3

[0028] attached Figure 5 It is a schematic diagram of implementing a uniaxial tensile test on a rock specimen by using the multifunctional rock mechanical performance testing machine of the present invention. The structure of the testing machine is basically the same as that of Example 1, except that the second actuator 3 is shrunk to the loading machine during the test process. Inside the frame, remove the passively loaded support rod 5, the upper shear box 6 and the lower shear box 7, and the rock specimen for the uniaxial tensile test is connected to the first actuator 2 through the upper tension device 14, and the The extension device 15 is connected with the load-bearing base 4 fixed on the loading frame, and the tensile load is applied by the first actuator 2 to carry out the test, so as to measure the mechanical properties of the rock specimen against uniaxial tension.

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Abstract

The invention discloses a multi-functional mechanical property tester of rock. A loading rack of the tester is a multi-face annular integral rack; a bottom wall of an annular inner wall of the rack is a plane for placing a rock test piece; a top wall of the annular inner wall of the rack is provided with a first actuator which vertically and downwardly points at the rock test piece; the wall face on one side of the annular inner wall of the rack is provided with a second actuator which horizontally and inwardly points at the rock test piece; the wall face on the other side opposite to the wall face on one side of the second actuator is provided with a passive loading support rod which can be moved away; one end of the passive loading support rod acts on the rock test piece, and the other end of the passive loading support rod acts on the inner wall face of the rack; the counteraction of the passive loading support rod and the action of the second actuator form a pair of shear loads. The multi-functional mechanical property tester of the rock provided by the invention can be used for testing different mechanical properties on a same tester, so that the aim that one machine can be used for multiple purposes is fulfilled; and the loading rack has a skillful and rational structural design, the rigidity of the loading rack is greatly improved.

Description

technical field [0001] The invention relates to the technical field of rock mechanical performance testing, in particular to a testing device for rock mechanical performance testing. Background technique [0002] The testing of rock mechanical properties such as direct shear test, uniaxial compression test, tensile test, and triaxial compression test of rock is a necessary test work for rock application in engineering and theoretical research of rock mechanics. However, the current single testing machine Only part of the test work can be completed. If you want to complete all the above-mentioned different types of tests, you need to complete them on testing machines with different test functions. The rock mechanics testing machines in the prior art need to be equipped with loading racks with different structural forms and stiffnesses for different types of tests, but the structural shapes of loading racks with different structural forms and stiffnesses are usually designed a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/24G01N3/08G01N3/20
Inventor 刘建锋谢和平徐进鞠杨邓建辉吴刚陈亮
Owner SICHUAN UNIV
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