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Method for manufacturing three-dimensional joint-fissure cylindrical rock sample

A technology of joint fissures and rock samples, applied in the field of rock engineering, to achieve reasonable test results, convenient operation, and strong practicability

Active Publication Date: 2016-03-23
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0013] Aiming at the current problem that it is difficult to process a real rock material sample with a prefabricated middle through-type three-dimensional joint fissure cylindrical shape, the purpose of the present invention is to propose a method for making a three-dimensional joint fissure cylindrical rock sample, which is easy to operate and flexible according to needs Fabrication of cylindrical real rock samples with three-dimensional joint fractures with different geometric parameters

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  • Method for manufacturing three-dimensional joint-fissure cylindrical rock sample
  • Method for manufacturing three-dimensional joint-fissure cylindrical rock sample
  • Method for manufacturing three-dimensional joint-fissure cylindrical rock sample

Examples

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Embodiment 1

[0035] Taking granite taken from a project site as an example, a method for making three-dimensional jointed and fractured cylindrical rock samples is introduced, which includes the following steps:

[0036] a. First, sample the engineering rock mass to be tested, and cut the irregular rock blocks obtained from the project site into cuboid-shaped regular rock blocks. The processed rectangular parallelepiped regular granite stones such as figure 1 As shown, the width L of the sample is about 200mm, the height H is about 85mm, and the thickness W is about 50mm;

[0037] b. Place the processed cuboid-shaped regular rock block on the "Yongda" brand high-pressure water jet cutting machine, and cut through-type joint fissures according to the designed geometric parameters. The cut regular cuboid granite blocks with penetrating joints and fissures are as follows: figure 2 As shown, there are single fissure 1, parallel distribution of double fissures 2, parallel distribution of thr...

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Abstract

The invention discloses a method for manufacturing a three-dimensional joint-fissure cylindrical rock sample. The method comprises the following steps that an engineering rock mass needing to be tested is sampled, and an irregular rock block obtained in an engineering field is cut into a rectangular regular rock block; the rectangular regular rock block is incised with a joint fissure by adopting a high-pressure water jet cutter; a rock core is extracted from the rectangular regular rock block containing the joint fissure by adopting a vertical rock core extracting machine; the end faces of the rock core are polished smoothly by adopting a double-end-face rock polishing machine. The method for manufacturing the joint fissure-containing cylindrical real rock standard test sample used for an indoor triaxial test is convenient to operate, high in practicability, precise in joint fissure positioning and capable of being generally used for preparing the joint fissure-containing rock samples.

Description

technical field [0001] The invention relates to the field of rock engineering, in particular to a method for making three-dimensional jointed fissure cylindrical rock samples. Background technique [0002] In the field of geotechnical engineering, rock with joints and fractures is a complex medium often encountered in various rock engineering such as mining, water conservancy, petroleum, and nuclear waste storage. A large number of engineering practices have shown that the instability and failure of rock engineering is usually caused by the opening, initiation, expansion and penetration of internal cracks to generate new shear sliding surfaces. It is of great theoretical value and practical significance to study the influence of crack distribution on mechanical parameters such as rock strength and deformation, and crack initiation, propagation and penetration modes. [0003] Although the method of using indoor model materials to study fractured and fractured rocks can bette...

Claims

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Application Information

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IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 杨圣奇黄彦华田文岭
Owner CHINA UNIV OF MINING & TECH
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