Physical testing method capable of directly observing internal deformation of rock mass model

A physical test and model technology, which is used in the preparation of test samples, measurement devices, and material analysis by optical means, can solve the problem that the internal deformation of the rock mass model cannot be directly observed, and achieves easy popularization, economical use, and stability. good effect

Inactive Publication Date: 2015-07-08
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide a rock mass model physical test method that can directly observe the in

Method used

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  • Physical testing method capable of directly observing internal deformation of rock mass model
  • Physical testing method capable of directly observing internal deformation of rock mass model
  • Physical testing method capable of directly observing internal deformation of rock mass model

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Embodiment 1

[0026] Embodiment 1: comprise the following steps:

[0027] (a) Prefabricated rock mass model test device, including two structures of glass box and peripheral steel frame, wherein the glass box is composed of 6 plexiglass plates (attached figure 2 ), the bottom glass plate needs to be drilled with a number of small holes with an interval of 10mm and a diameter of 2mm, which are used for liquid discharge when similar materials in transparent rock mass are consolidated, and the front glass plate needs to be drilled with circular or Holes of other shapes are used to facilitate subsequent test excavation; the purpose of the peripheral steel frame is to ensure that the plexiglass box will not be deformed under the test load, and it is composed of 4 hollow cutting steel plates (attached image 3 ) and 8 screw rods;

[0028] (b) Use colored paint spray cans to spray paint on 300-mesh transparent silicon powder particles to form colored silicon powder particles of various single co...

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Abstract

The invention discloses a physical testing method capable of directly observing the internal deformation of a rock mass model, which belongs to a physical testing method for rock mass models. The method is implemented through mixing three industrial materials, i.e. silicon powder, liquid paraffin and n-tridecane at a mass ratio of 1:0. 836:0.702 so as to form a transparent rock mass similar material; then, pouring the transparent rock mass similar material into a rock mass model testing device for many times to carry out vacuum-pumping treatment, so that air in the similar material is discharged, and in the process of pouring for vacuum-pumping, regularly paving colored homogeneous silicon powder particles on several planes of the inside of a rock mass model so as to form artificial spot-making planes; and after a transparent rock mass model is completely manufactured, carrying out displacement tracking monitoring on artificial colored particles in the model in the process of testing by using a digital camera photogrammetry technology, so that rock mass deformation evolving data of each key part in the model is obtained. The method disclosed by the invention has the advantages that the direct observation on the internal deformation of a rock mass is realized; and the method can monitor full-field deformation, and is simple and flexible, economic in use, good in stability, and easy to promote.

Description

technical field [0001] The invention relates to a rock mass model physical test method, in particular to a rock mass model physical test method which can directly observe internal deformation. Background technique [0002] In the field of geotechnical engineering, the physical similarity simulation test is an important means to study the scientific and technical issues of geotechnical engineering. The detailed measurement of the surface and internal deformation of the geotechnical model is an important basis for comprehensive analysis of the law and mechanism of geotechnical deformation. However, due to the opacity of similar materials in the current physical model, the deformation inside the model cannot be directly observed. Generally, two technologies, borehole camera and CT scan, are used. The former can directly observe the local area inside the model, but the operation is complicated and will affect the model. In addition, the amount of data obtained is very limited, w...

Claims

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Application Information

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IPC IPC(8): G01N21/84G01N1/28
Inventor 李元海林志斌吴玲孔骏贾冉旭
Owner CHINA UNIV OF MINING & TECH
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