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Joint test specimen method using 3D (three-dimensional) printing for making structure surface containing specific geometrical characteristics

A geometric feature and 3D printing technology, applied in the preparation of test samples, etc., can solve the problems of unsatisfactory joint shape sample preparation and difficult joint rock sample operation, and achieve the effect of simple, fast and safe operation of the sample preparation process

Active Publication Date: 2015-07-29
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method that is easy to operate and can be flexibly produced with different morphological features according to the needs. Using 3D printing to produce a joint sample method with a structural surface with specific geometric features, it can solve the operational difficulties of joint rock samples and the joint shape. Unsatisfactory sample preparation

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  • Joint test specimen method using 3D (three-dimensional) printing for making structure surface containing specific geometrical characteristics
  • Joint test specimen method using 3D (three-dimensional) printing for making structure surface containing specific geometrical characteristics
  • Joint test specimen method using 3D (three-dimensional) printing for making structure surface containing specific geometrical characteristics

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Embodiment 1

[0029] The preparation method of the rock-like sample of the jointed rock mass includes: structural surface design and mold printing, assembly of the sample preparation box and the mold, pouring of similar materials, demoulding and sample maintenance; Contour scanning technology obtains the appearance of the actual rock mass structural surface; after passing the designed structural surface through the complete cylinder model in the 3D drawing software, the two-part complementary test block model obtained by segmentation is obtained through Boolean operations, and the two parts of the test block model are separated by using a 3D printer. The block models are printed and formed separately; the printed molds are placed in two sample preparation boxes and assembled, and similar materials are poured into the sample preparation boxes, and the molds are removed and maintained after they are solidified; The standard sample of the structural surface; prepare the jointed rock mass with c...

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Abstract

The invention provides a joint test specimen method using 3D (three-dimensional) printing for making a structure surface containing specific geometrical characteristics, and belongs to a specimen making method of model test specimens similar to joint rock bodies. According to the method, the structure surface is independently designed according to study requirements, or the actual rock body structure surface appearance is obtained through a surface outline scanning technology; the designed structure surface penetrates through a complete cylinder model in 3D graphics software, two parts of complementary test block models obtained through separation are obtained through Boolean operation, and a 3D printer is used for respectively printing and forming the two parts of test block models; printing molds are respectively put into two specimen making boxes and are assembled, similar materials are cast into the specimen making boxes, and the mold dismounting maintenance is carried out after the materials are solidified and formed; the two parts of test blocks are correctly combined to obtain the standard test specimens containing the designed structure surface. The method has the advantages that (1) the operation of the method is safe, simple and convenient; (2) the complicated and variable structure surface is embedded in the standard test specimens, the actual rock body structural surface can be reproduced through being matched with the surface outline scanning technology, and the reasonable test result is obtained.

Description

technical field [0001] The invention relates to a sample preparation method for a similar model sample of a jointed rock mass, in particular to a method for making a joint sample with a structural surface with specific geometric features by using 3D printing. Background technique [0002] The rock mass in nature produces various structural planes due to the complex geological action, and this structural plane largely affects the mechanical characteristics of the jointed rock mass. Since the geometry of structural planes inside real jointed rock mass is difficult to obtain clearly, similar model materials can be used to make rock-like samples of jointed rock mass. The key point of making this type of rock sample is to be able to embed structural planes with geometric parameters such as different shapes, inclination angles and roughness inside it. At present, the research methods for jointed rock mass are mainly to roughly infer the shape of the structural plane through the o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 杨圣奇曾卫文凯
Owner CHINA UNIV OF MINING & TECH
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