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Rock true triaxial test method capable of realizing external loading of test specimen

A test method, true triaxial technology, applied in the preparation of test samples, measuring devices, and the use of stable tension/pressure to test the strength of materials, etc., to achieve the effect of beautiful appearance, high control precision, and complete protection functions

Active Publication Date: 2017-05-10
PLA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional triaxial rock mechanics tests generally apply a certain confining pressure to the rock, and then keep the confining pressure constant (that is, σ2 = σ3) to increase the maximum principal stress σ1 to cause rock damage. This test method can only study axisymmetric stress state, not applicable to the influence of intermediate principal stress on rock mass strength and deformation

Method used

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  • Rock true triaxial test method capable of realizing external loading of test specimen
  • Rock true triaxial test method capable of realizing external loading of test specimen
  • Rock true triaxial test method capable of realizing external loading of test specimen

Examples

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Embodiment 1

[0026] This embodiment provides a rock true triaxial test device that can be equipped with samples, the structure is as follows figure 1 , figure 2 As shown, it includes the X-direction support frame 4 and the Y-direction support frame 5 which are horizontally arranged and installed vertically to each other. The Z-direction support frame 6 is perpendicular to the X-direction support frame 4 and the Y-direction support frame 5. The X-direction loading worktable 1 is installed on the frame 4, and the X-direction loading workbench 1 can slide along the setting direction of the X-direction support frame 4. The Y-direction loading workbench 2 is installed on the Y-direction support frame 5, and the Y-direction loading work The table 2 can slide along the setting direction of the Y-direction support frame 5, and the Z-direction support frame 6 is equipped with a Z-direction loading workbench 3, and the Z-direction loading workbench 3 can slide along the setting direction of the Z-d...

Embodiment 2

[0033] This embodiment provides a rock true triaxial test method that can be equipped with samples, including the following specific steps:

[0034] Step (1), check whether the lines and pipelines are well connected and carry out debugging;

[0035] Step (2), push the Y-direction loading frame 213 by driving the Y-direction support frame pushing device 212, and push the Y-direction loading worktable 2 into the Z-direction loading workbench 3;

[0036] Step (3), assemble the sample into a sample assembly according to the requirements, move the rock sample installation trolley 7 back to the branch slide rail on the side of the X-direction support frame 4, and install it on the rock sample installation trolley 7, and then put the rock sample installation trolley The rock sample installation trolley 7 with the sample assembly is pushed into the X-direction loading frame 101 through the branch slide rail;

[0037] Step (4), together with the rock sample installation trolley 7, pus...

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Abstract

The invention discloses a rock true triaxial test method capable of realizing the external loading of a test specimen. An X-direction loading framework is moved out; a specimen assembly is installed; the specimen assembly is pushed into a Z-direction loading work table of a host machine, and is subjected to true triaxial loading by combining a Y-direction loading work table; in the loading process, micro displacement and applied loading force can be measured; after the loading test is completed, the loading work tables sequentially quit; the specimen assembly arranged on an installing trolley is dismounted; pipelines of equipment are closed, and power supplies of the equipment are turned off. The rock true triaxial test method has the advantages that a four-post structure is used in the perpendicular direction of a host machine; integrally cast loading frameworks are used in two horizontal directions; the device is stable in structure nd has high rigidity; the loading frameworks adopt a sliding design; the specimen loading and the debugging can be performed at the outside; the moving space is large; the installation and the operation are convenient.

Description

technical field [0001] The invention belongs to the field of rock triaxial test equipment, and relates to a rock true triaxial test method that can be equipped with external samples. Background technique [0002] Under natural conditions, the crust and engineering rock mass are deformed and destroyed under complex combined stress states. Rock mass is a complex geological body, which is in a complex three-dimensional stress field, and the failure of rock mass is usually caused by the change of its existing stress state. Conventional triaxial rock mechanics tests generally apply a certain confining pressure to the rock, and then keep the confining pressure constant (that is, σ2 = σ3) to increase the maximum principal stress σ1 to cause rock damage. This test method can only study axisymmetric stress State, not applicable to the influence of intermediate principal stress on rock mass strength and deformation. The true triaxial test can solve the evolution problem of the compl...

Claims

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Application Information

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IPC IPC(8): G01N3/12G01N1/28
CPCG01N1/28G01N3/12G01N2203/0003G01N2203/0019G01N2203/0048G01N2203/0298G01N2203/0676G01N2203/0682
Inventor 董璐马林建许宏发吕亚茹刘家贵陈万祥杨绪普
Owner PLA UNIV OF SCI & TECH
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