Using 3D printing to make a joint sample method with a structural surface with specific geometric features

Abstract

The invention discloses a method of making a joint sample with a structural surface with specific geometric characteristics by using 3D printing, which belongs to the sample preparation method of a similar model sample of a jointed rock mass. This method designs the structural surface by itself according to the research needs or obtains the actual rock mass structural surface morphology through surface contour scanning technology; after passing the designed structural surface through the complete cylinder model in the 3D drawing software, the two parts obtained by the division are obtained through Boolean operations Complementary test block model, use the 3D printer to print the two parts of the test block model separately; place the printed molds in the two sample preparation boxes and assemble them, pour similar materials into the sample preparation boxes, and remove the mold after it is solidified and formed Conservation: Correctly combine the two parts of the test block to obtain a standard sample containing the designed structural surface. 1) The method is safe and simple to operate. 2) Embedding complex and variable structural surfaces in the standard sample, the actual rock mass structural surfaces can be reproduced by cooperating with the surface contour scanning technology, and reasonable test results can be 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...

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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