Preparation method of heterogeneous anisotropic transparent rock-like material sample

An anisotropic, rock material technology, applied in the field of geotechnical engineering, which can solve the problems of limited quantity, high cost of rock CT scanning, and restricted use.

Active Publication Date: 2021-02-26
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most effective method is the industrial CT test, which analyzes the development process of the internal fractures of the rock samples through CT scanning during the loading process, but the cost of rock CT scanning is high, it is difficult to obtain samples, the number is limited, and the internal fractures are random, different The failure characteristics of rock samples are different, which restricts the use of this method to a certain extent.

Method used

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  • Preparation method of heterogeneous anisotropic transparent rock-like material sample
  • Preparation method of heterogeneous anisotropic transparent rock-like material sample
  • Preparation method of heterogeneous anisotropic transparent rock-like material sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for preparing a heterogeneous anisotropic transparent rock-like material sample, comprising the following steps:

[0037] (1) Material cleaning: first clean the transparent colorless fused silica sand and transparent colored glass sand with plasma water. After cleaning, put the fused silica sand and glass sand into a drying box, dry them at 60°C, and take them out. Remove impurities with tweezers;

[0038] (2) Material weighing: take epoxy resin and curing agent by mass ratio 3:1;

[0039] (3) Stirring of materials: Put the weighed epoxy resin and curing agent into the stirrer and stir well. When pouring, try to avoid sticking to the side wall of the container, so that the raw materials cannot be fully stirred evenly. The stirring time is 3 minutes. , to prepare transparent glue;

[0040] (4) Vacuuming: Put the transparent glue into the vacuum barrel to remove the air bubbles. During the vacuuming process, the vacuum barrel can be shaken continuously to vibra...

Embodiment 2

[0047] A method for preparing a heterogeneous anisotropic transparent rock-like material sample, comprising the following steps:

[0048] (1) Material cleaning: first clean the transparent colorless glass sand and transparent colored glass sand with plasma water. Impurity removal;

[0049] (2) Material weighing: take epoxy resin and curing agent by mass ratio 3:1;

[0050] (3) Stirring of materials: Put the weighed epoxy resin and curing agent into the stirrer and stir well. When pouring, try to avoid sticking to the side wall of the container, so that the raw materials cannot be fully stirred evenly. The stirring time is 3 minutes. , to prepare transparent glue;

[0051] (4) Vacuuming: Put the transparent glue into the vacuum barrel to remove the air bubbles. During the vacuuming process, the vacuum barrel can be shaken continuously to vibrate the transparent glue, so that the air bubbles in the transparent glue can be discharged more easily. , the vacuuming time is 5-8 mi...

Embodiment 3

[0058] The preparation method of the heterogeneous anisotropic transparent rock-like material sample comprises the following steps (the schematic diagram of the preparation method is as follows: Figure 5 ):

[0059] (1) Material cleaning: first clean the transparent colorless fused silica sand, transparent colorless glass sand and transparent colored glass sand with plasma water. Dry it down, take it out, and remove the impurities with tweezers;

[0060] (2) Material weighing: take epoxy resin and curing agent by mass ratio 3:1;

[0061] (3) Stirring of materials: Put the weighed epoxy resin and curing agent into the stirrer and stir well. When pouring, try to avoid sticking to the side wall of the container, so that the raw materials cannot be fully stirred evenly. The stirring time is 3 minutes. , to prepare transparent glue;

[0062] (4) Vacuuming: Put the transparent glue into the vacuum barrel to remove the air bubbles. During the vacuuming process, the vacuum barrel ...

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Abstract

The invention discloses a preparation method of a heterogeneous anisotropic transparent rock-like material sample. The method comprises the following steps of: randomly distributing cubic small rubberblocks filled with quartz and glass sand in a transparent rock-like sample, and arranging joint surfaces at positions 1 / 3 away from the upper and lower surfaces of the sample, thereby increasing holes and joints in the rock sample. By testing the wave velocities of the prepared rock material sample, it is found that the longitudinal wave velocity and the transverse wave velocity are inconsistent,and the heterogeneity and anisotropism of the transparent rock-like sample are shown; through a sample uniaxial compression test, it is found that the destroyed post-peak curve of the transparent rock-like sample is similar to the post-peak curve of rock, which is the characteristic of the invention. According to the three samples prepared by the invention, the failure rules under uniaxial compression are respectively consistent with the failure rules of carbonaceous slate, marble and dolomite, which proves that most of complete rock failure stress-strain curves can be simulated through material proportioning, and the result can be used for revealing the fracture evolution rule inside the rock.

Description

technical field [0001] The invention relates to a method for preparing a heterogeneous anisotropic transparent rock material sample, and belongs to the field of geotechnical engineering. Background technique [0002] With the vigorous development of the national economy, rock mechanics is widely used in hydraulic engineering, construction, mineral energy, national defense and security and other fields. Engineering rock mass in nature is a discontinuous, heterogeneous and anisotropic complex structure composed of rock materials and structural planes. Its interior is composed of various mineral materials and cements, etc., and is randomly distributed. There are some discontinuous structural surfaces such as joints, cracks, holes and faults. The research on rock mechanics has always been the focus of technicians. [0003] At present, engineering rock mass or traditional similar material models are opaque materials, and the evolution process of deformation and fracture inside ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/34G01N1/36G01N1/38G01N1/28
CPCG01N1/34G01N1/36G01N1/38G01N1/28G01N2001/364G01N2001/366
Inventor 朱昌星龚健王凤娥安烨明李伟东王彦伟陈新明林志斌刘旭孙家鑫赵伟浩刘辉峰王艳森陈防修
Owner HENAN POLYTECHNIC UNIV
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