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A method for making transversely isotropic true triaxial rock samples

A technology of transverse isotropy and production method, which is applied in the field of rock mass engineering, can solve the problems of core damage, influence on the accuracy of experimental results, sample preparation efficiency, fracture, etc., reduce damage and damage, and improve sample preparation. efficiency effect

Active Publication Date: 2021-04-02
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, for the production of samples with smaller specifications, such as 50mm×25mm×25mm, there will also be the problem that the core is easily damaged or broken by mechanical disturbance, which greatly affects the accuracy of the experimental results and the efficiency of sample preparation

Method used

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  • A method for making transversely isotropic true triaxial rock samples
  • A method for making transversely isotropic true triaxial rock samples
  • A method for making transversely isotropic true triaxial rock samples

Examples

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Embodiment 1

[0050] Embodiment 1: Take the production of a transversely isotropic true triaxial rock sample with a dimension of 100mm×50mm×50mm as an example.

[0051] A method for making a transversely isotropic true triaxial rock sample, comprising the steps of:

[0052] Step 1: Cut the flat surface

[0053] ①. Place the irregularly shaped rock specimen 1 on the cutting machine platform 2, and at the same time adjust the layer 3 of the rock specimen 1 to be parallel to the cutting machine platform 2 by means of a backing plate 21 and a level, as shown in FIG. figure 2 shown;

[0054] ②, start the cutting machine, the cutting direction is perpendicular to the layer 3 of the rock sample 1, and cut out the first flat layer on the rock sample 1, such as image 3 shown;

[0055] ③. Rotate the rock specimen 1 by 90° so that the first plane of the rock specimen 1 faces down and is placed on the cutting machine platform 2. At this time, the layer 3 of the rock specimen 1 is perpendicular to ...

Embodiment 2

[0076] Embodiment 2: Take the production of a transversely isotropic true triaxial rock sample with a dimension of 50mm×25mm×25mm as an example.

[0077] A method for making a transversely isotropic true triaxial rock sample, comprising the steps of:

[0078] Step 1: Cut the flat surface

[0079] ①. Place the irregularly shaped rock specimen 1 on the cutting machine platform 2, and at the same time adjust the layer 3 of the rock specimen 1 to be parallel to the cutting machine platform 2 by means of a backing plate 21 and a level, as shown in FIG. figure 2 shown;

[0080] ②, start the cutting machine, the cutting direction is perpendicular to the layer 3 of the rock sample 1, and cut out the first flat layer on the rock sample 1, such as image 3 shown;

[0081] ③. Rotate the rock specimen 1 by 90° so that the first plane of the rock specimen 1 faces down and is placed on the cutting machine platform 2. At this time, the layer 3 of the rock specimen 1 is perpendicular to t...

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Abstract

A method for making transversely isotropic true triaxial rock samples, the steps are: cut the flat layer → drill the column sample → cut the column sample → draw line marks → cut off the edge material → grind and shape. Cutting flat layers: Use a cutting machine to cut two mutually perpendicular flat layers on the rock specimen, one flat layer is parallel to the rock specimen layer; Drilling column samples: Place the rock specimen in the clamping adjustment mechanism and set β At the included angle, use a thin-walled drill bit to drill a cylindrical rock sample on the rock specimen; cut the column sample: cut the corresponding elevation rock column sample on the cylindrical rock sample; draw a line mark: on the end face of the elevation rock column sample Mark the center of the circle and draw the loading direction line and positioning line. The loading direction line and the layer form an angle of ω, and the loading direction line and the positioning line form an angle of 45°. Draw a square area to form four arc-shaped edge areas; cut off the edge material. : Cut off the four arc-shaped edge areas; grinding and shaping: grind the surface of the sample to complete the production of transversely isotropic true triaxial rock samples.

Description

technical field [0001] The invention belongs to the technical field of rock mass engineering, in particular to a method for making a transversely isotropic true triaxial rock sample. Background technique [0002] In the fields of mining engineering, water conservancy and hydropower engineering, and tunnel engineering, the surrounding rock mass is mostly layered rock, and the spatial topological relationship between the rock formation and the engineering cavern has a significant impact on the mechanical response of the surrounding rock. In these engineering activities, the failure phenomenon of rock mass is closely related to the anisotropic characteristics of the mechanical properties of layered rock mass. In order to more reliably evaluate the stability of layered rock mass, that is, the stability of transversely isotropic rock mass, it is particularly important to fully understand the strength characteristics and failure modes of transversely isotropic rock mass under the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28
CPCG01N1/286G01N2001/2866G01N2001/2873
Inventor 冯夏庭刘旭锋周扬一龚彦华辜良杰
Owner NORTHEASTERN UNIV LIAONING
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