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Method of making a model of columnar rock mass with cracks based on CT scanning and 3D printing

A 3D printing and CT scanning technology, which is applied in the field of making columnar rock mass models with cracks based on CT scanning and 3D printing technology, can solve the problems of high cost, unfinished samples, and large engineering volume, and achieve the effect of short time consumption

Inactive Publication Date: 2017-09-01
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Relying on the existing technical level to carry out on-site sampling and experiments, the project volume is large, the cost is high, the sampling samples are limited, and the experimental results obtained are discrete, which is difficult to meet the needs of engineering practice
Indoor model experiments mostly use similar materials to cast models. Although the mechanical properties are relatively close to those of natural rock mass, artificial sample preparation methods are used, and the reproducibility of prefabricated cracks inside the samples is poor, and it is almost impossible to complete samples with complex structures.

Method used

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  • Method of making a model of columnar rock mass with cracks based on CT scanning and 3D printing
  • Method of making a model of columnar rock mass with cracks based on CT scanning and 3D printing

Examples

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Embodiment 1

[0027] Such as figure 1 As shown, in the three-dimensional printing (3DP) process in the 3D printing technology adopted in this embodiment, the main printing equipment includes a powder feeding cylinder, a forming cylinder, a recovery cylinder, a cement supply cylinder, a powder feeding roller and a printing nozzle, and the whole work is performed by a computer. control system control. The medical CT machine used in the CT scan in this example is a Toshiba Aquilion One 320-row dynamic volume CT machine, the high voltage of the X-ray source is 120kV, the grayscale of the CD image sensor is 16bit, the scanning speed is fast, and the imaging time is 0.175s; Tomography image. This embodiment adopts VX1000 3D printer, the modeling space of this printer is 1060*600*500 mm, and the resolution is 600dpi.

[0028] see figure 2 , the present embodiment provides a method for making a columnar rock mass model containing cracks based on CT scanning and 3D printing technology, including...

Embodiment 2

[0039] The manufacturing steps are the same as in Example 1, except that the inclination angle of the prefabricated crack is 45°.

Embodiment 3

[0041] The manufacturing steps are the same as in Example 1, except that the inclination angle of the prefabricated crack is 30°.

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Abstract

The invention discloses a cracked cylindrical rock model making method based on CT scanning and 3D printing. The method comprises steps that on the basis of influence of cracks on rock mechanical property, a cylindrical rock model which is consistent with an internal structure of a natural rock and contains the cracks is made; reconstruction of a CT scanning image is carried out, the cracks are made by utilizing a three-dimensional mask edition function of three-dimensional image processing software, the cylindrical rock model with the cracks is acquired through utilizing the 3D printing technology, and the cylindrical rock model is applied to rock mechanical property researches. The cracks with different dimensions and inclination angles can be precisely made according to different experiment requirements, and a new approach is provided for rock mechanical property researches.

Description

technical field [0001] The invention belongs to the field of rock mechanics and engineering, and relates to the making of a model for rock material laboratory mechanical experiment research, in particular to a method for making a columnar rock mass model with fissures based on CT scanning and 3D printing technology. Background technique [0002] Rock mass is a geological body formed after a long period of geological action. It contains a variety of minerals and a large number of structural surfaces such as pores, joints, and fissures. Its internal structure is very complex. [0003] In the field of rock mechanics and engineering, the methods for studying the mechanical properties of rock mass mainly include in-situ experiments and indoor model experiments. Relying on the existing technical level to carry out in-situ sampling and experiments on site, the engineering volume is large, the cost is high, the sampling samples are limited, and the experimental results obtained are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/10
CPCG06T17/10
Inventor 田威裴志茹田雪萍
Owner CHANGAN UNIV