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Fittings for preparing cuboid columnar jointing rock test sample

A columnar joint and sample preparation technology, which is applied in the preparation of test samples, sampling, and measuring devices, can solve the problems of unreachable powder particle size, immature 3D printing technology, test requirements and high preparation costs, and achieve Improvement of sample integrity and yield, saving money, simple preparation process

Active Publication Date: 2018-02-02
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Chinese invention patent with the notification number CN104515696A discloses "Preparation method of similar material samples of columnar joint rock mass using 3D printing technology", which directly prepares samples containing columns and joints by 3D printing technology, but its The disadvantage is that the 3D printing technology using two different materials is not mature, the particle size of the powder used for printing cannot meet the test requirements and the preparation cost is extremely high

Method used

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  • Fittings for preparing cuboid columnar jointing rock test sample
  • Fittings for preparing cuboid columnar jointing rock test sample
  • Fittings for preparing cuboid columnar jointing rock test sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] image 3 As shown, it is a 0° columnar rock mass mold made of iron powder material using 3D printing technology. Iron powder is used to control the joint thickness to 1mm through 3D printing technology, and the inclination angle of the joints in the model used is 0°. In this embodiment Just use 0° columnar rock mass mold 6 to make columnar sample.

[0054] Figure 4 As shown, connect the connecting holes of the active plate near the top of the first active plate and the top of the second active plate with the connecting holes in the active plate of the first top block, and connect the connecting holes of the passive plate near the top of the first passive plate and the top of the second passive plate Connect with the connection hole in the passive plate of the first top block, remove the first active plate or the second active plate in the set, put the anti-wear clip into the concave part of the first passive plate or the second passive plate and place 0 °The columnar...

Embodiment 2

[0056] Figure 5 As shown, the position of the first active plate or the second active plate is still replaced by the anti-wear clip strip, the connection holes are connected as in Example 1, and the solidified columnar rock mass in the above-mentioned Example 1 is demoulded. Combine the prepared bonding materials in the cavity, wait for the bonding to be completely solidified, and obtain a sample block. At this time, the size of the sample block is 600×600×1100mm 3 .

Embodiment 3

[0058] Image 6 As shown, connect the first active plate, the first passive plate, the second active plate and the second passive plate in sequence, replace the first jacking block or the second jacking block with an anti-wear block, and replace the remaining second jacking block Or the first jacking block is pushed 300mm into the set, so that the connecting hole of the active plate is connected with the outer connecting hole of the active plate of the jacking block, and the connecting hole of the passive plate is connected with the outer connecting hole of the passive plate of the jacking block. Grind the 50mm of the top of the set; after one end is polished, add a top cushion block on the polished end surface of the sample block, pull out the top block on the other side and use the anti-wear block to replace the sample Push the block into the inside of the set, so that the connecting hole of the active plate is connected with the outer connecting hole of the active plate of ...

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PUM

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Abstract

The invention relates to fittings for preparing a cuboid columnar jointing rock test sample. The fittings comprise a first driving plate, a first driven plate, a second driving plate and a second driven plate, wherein two sides of the four components are sequentially connected to form a hollow cuboid structure for holding a columnar jointing rock mold; an inner cavity is formed inside the cuboid structure; the first driving plate and the second driving plate of the hollow cuboid structure can be moved freely. By adopting the fittings, the columnar jointing rack can be prepared, combined, polished and the like, jointing is prevented from damage when a large-size test sample is cut, and meanwhile due to a fastening function of the fittings upon the test sample, the problem that the jointingis cracked in the polishing process is overcome.

Description

technical field [0001] The invention relates to a set used for preparing cuboid columnar jointed rock samples, which belongs to the preparation of rock test samples. Background technique [0002] In order to study complex rock masses such as columnar joints, concrete, resin and other similar materials are usually used in rock mechanics engineering for laboratory tests. However, it is more difficult to prepare rock mass samples containing a large number of joints and the test requires that the joints have an inclination angle. Unlike cylindrical samples, cuboid samples cannot be drilled directly. It needs to prepare columnar rock mass, combine columnar bodies, and cut into Blocking, grinding and other processes, the difficulty is that the joints are easy to crack during cutting and grinding, and the sample is not easy to form. [0003] In order to overcome this difficulty, there is a method for preparing similar material samples of columnar jointed rock mass using 3D printin...

Claims

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Application Information

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IPC IPC(8): G01N1/28
CPCG01N1/286G01N2001/2866
Inventor 阙相成朱珍德卢文斌刘金忠龚超林国财徐晨城何燕新何志磊王震
Owner HOHAI UNIV
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