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Manufacture method of transparent tunnel model for simulating network containing complex fracture

A technology of tunnel model and fracture network, which is applied in the field of rock engineering, can solve the problems that it is difficult to accurately control the length and quantity of underground caverns, the accuracy of underground caverns cannot be accurately controlled, and the authenticity and accuracy of experimental results are affected. Prepare effects of different lengths, good brittleness, and easy molding

Active Publication Date: 2018-05-01
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can prepare underground caverns of different shapes, but due to the soft nature of PVC materials, the accuracy of underground caverns cannot be accurately controlled. Using the mold positioning method in this paper, it is difficult to accurately control the length and number of tunnels in underground caverns
At the same time, the rock-like material used in this invention is a homogeneous material with isotropic characteristics, which is very different from the anisotropic characteristics of real rocks, which affects the authenticity and accuracy of the experimental results.

Method used

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  • Manufacture method of transparent tunnel model for simulating network containing complex fracture
  • Manufacture method of transparent tunnel model for simulating network containing complex fracture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] It is planned to make a single tunnel model with a length of 100mm, a width of 100mm, and a height of 100mm. The specific manufacturing method is as follows:

[0049] (1) Prepare the frame mold of the tunnel model

[0050] Use 5 plexiglass plates to bond with an adhesive to make a cube-shaped box-shaped frame mold with an upper opening. In order to facilitate curing of the tunnel model, the size of the plexiglass plate is slightly larger than the actual size of the tunnel model. The size of the bottom plexiglass plate is 120X120mm , two side panels 120X110mm, the other two side panels 100X110mm, the thickness of the plexiglass plate is 10mm.

[0051] According to the relative positional relationship of the tunnel channel, the cracks in the surrounding rock and the complex crack network of the tunnel model to be prepared, the positioning of the tunnel channel model, crack model and complex crack model in the glass plate frame mold is pre-designed through CAD drawing, and...

Embodiment 2

[0064] It is planned to make two double tunnel models with a length of 100mm, a width of 100mm and a height of 100mm.

[0065] Preparation of frame mould, tunnel channel and fissure model, 3D printing preparation of complicated fissure model steps in the surrounding rock of the tunnel model are the same as in Example 1;

[0066] Positioning of the tunnel model, such as figure 2 As shown, according to the CAD drawing, use a soft cotton thread to pass through each positioning hole on the frame mold of the plexiglass plate and the complex crack model of the mica sheet and 3D printing in sequence, and connect the plexiglass tube, the mica sheet, and the complex crack model of the 3D printing The model is fixed at the positioning position of the tunnel channel model, crack model and complex crack model, and two plexiglass tubes with a length of 105mm are inserted into the plexiglass plate frame mold from the tunnel tunnel insertion holes on the plexiglass plate frame mold, and the...

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Abstract

The invention belongs to the field of rock engineering, and relates to a manufacture method of a transparent tunnel model for simulating a network containing a complex fracture. Specific to the shortcomings and defects existing in a current manufacture method of the transparent tunnel model, the invention provides the manufacture method of a high transparent tunnel model which is good in brittleness and easy to form and demold and can be used for easily preparing drill ways with different lengths and controlling the relative position relationship of fractures and a tunnel, an organic glass tube is adopted to simulate the drill ways of the tunnel, a mica sheet is adopted to simulate the fractures existing in rock, and a 3D (three-dimensional) printing technology is adopted to manufacture acomplex fracture model to simulate a complex fracture network in surrounding rock. The method can be used for simulating the transparent tunnel model of which both the excavation phases and the tunnelnumber are different, the fractures which have different shapes, different angles, different numbers and different position relations with the tunnel can be accurately arranged in the surrounding rock, so that the tunnel model can be easily used for observing the mechanical property and fracture law of the underground tunnel, which is subjected to pressing, of jointed rock.

Description

technical field [0001] The invention belongs to the field of rock engineering, and relates to a method for making a transparent tunnel model simulating complex crack networks. technical background [0002] The rock has undergone a long geological tectonic process, and there are a large number of cracks and holes in the rock, which change the mechanical properties of the rock, reduce the ultimate bearing capacity of the rock, and are prone to engineering disasters such as collapse and rockburst. Because rocks in nature are in complex geological activities, they are in different stress environments, and the shapes and occurrence methods of cracks in rocks vary widely. Therefore, it is of great academic and engineering significance to study the failure behavior of defective media with different shapes of flaky cracks and complex crack networks. When studying the mechanical properties and fracture characteristics of engineering rocks, using the laboratory is an effective method...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N1/36
CPCG01N1/28G01N1/36G01N2001/364G01N2001/366
Inventor 贾蓬姬万民崔庆文王飞燕张瑶赵爱成杜功成
Owner NORTHEASTERN UNIV
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