Fault analog simulation material used for fluid-solid coupling model test and preparation method thereof

A technology of coupled model and similarity simulation, applied in the field of material science, which can solve the problems of rare material ratio of similar faults, rarely considering the water characteristics of materials, and difficult to respond to seepage changes.

CN103183495AInactive Publication Date: 2013-07-03SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-07-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a fault analog simulation material used for a fluid-solid coupling model test, which comprises components in parts by weight as follows: 1 part of quartz sand, 0.05-0.25 part of talcum powder, 0.05-0.15 part of gypsum powder, 0.08-0.2 part of Vaseline and 0.1-0.2 part of water. The material adopts gypsum as a cementing agent, so as to achieve simulation for fault fluid-solid coupling characteristics; the talcum powder and the quartz sand are adopted as conditioning agents to regulate the weight of the material; and the Vaseline is adopted as a water resistant agent to regulate permeability of the material, simultaneously adopted as a plastic cementing agent of the material, and used for simulating the fault fluid-solid coupling characteristics under different permeability conditions, and real-time comparison with surrounding rock fluid-solid coupling characteristics in the same experiment is achieved. The fault analog simulation material in the fluid-solid coupling model test disclosed by the invention can regulate the strength and the permeability of the material within a larger range, and simulate various types of faults at various levels of intensity.
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Description

technical field

[0001] The invention relates to a fault similar simulation material used for fluid-solid coupling model tests and a preparation method thereof, belonging to the technical field of material science. Background technique

[0002] At present, many scholars use a large number of geomechanical model tests to study the optimization of underground engineering design and construction methods, and explore the mechanical laws of the construction process. However, there are many obvious deficiencies in the current underground engineering model tests, especially in the research and development of similar materials. In the past, most of them focused on the similarity of simulated physical characteristics, and rarely considered the characteristics of materials in water. Although very few consider the fluid-solid coupling effect, in the model test, only a similar material of surrounding rock is often used, which is relatively uniform, and it is difficult to reflect the seep...

Examples

Embodiment 1

[0031] Example 1 Preparation of similar materials for simulating faults in fluid-solid coupling model tests

[0032] The raw materials are as follows: 1 part of quartz sand, 0.12 part of talcum powder, 0.08 part of gypsum powder, 0.09 part of vaseline, and 0.13 part of water.

[0033] The preparation method is:

[0034] 1) Weigh quartz sand, gypsum powder, talcum powder, vaseline and mixing water in strict proportion;

[0035] 2) Mix the three fine-grained materials of quartz sand, gypsum powder and talcum powder and stir evenly;

[0036] 3) Add the weighed mixing water and stir thoroughly;

[0037] 4) Heat the vaseline to 55°C to melt it into a liquid state;

[0038] 5) Mix the liquid petroleum jelly with the material obtained in step 3), and stir well;

[0039] 6) Cool at room temperature for 5 minutes, ready to serve.

[0040] The stress-strain of the obtained material under uniaxial compressive condition is as follows: figure 1 As shown, it reflects the change proces...

Embodiment 2

[0041] Example 2 Preparation of similar materials for simulating faults in fluid-solid coupling model tests

[0042] The raw material composition is: 1 part of quartz sand, 0.18 part of talcum powder, 0.07 part of gypsum powder, 0.1 part of vaseline, and 0.12 part of water.

[0043] The preparation method is:

[0044] 1) Weigh quartz sand, gypsum powder, talcum powder, vaseline and mixing water in strict proportion;

[0045] 2) Mix the three fine-grained materials of quartz sand, gypsum powder and talcum powder and stir evenly;

[0046] 3) Add the weighed mixing water and stir thoroughly;

[0047] 4) Heat the vaseline to 55°C to melt it into a liquid state;

[0048] 5) Mix the liquid petroleum jelly with the material obtained in step 3), and stir well;

[0049] 6) Cool at room temperature for 5 minutes, ready to serve.

Embodiment 3

[0050] Example 3 Preparation of similar materials for simulating faults in fluid-solid coupling model tests

[0051] The raw materials are as follows: 1 part of quartz sand, 0.08 part of talcum powder, 0.12 part of gypsum powder, 0.13 part of vaseline, and 0.1 part of water. The preparation method is:

[0052] 1) Weigh quartz sand, gypsum powder, talcum powder, vaseline and mixing water in strict proportion;

[0053] 2) Mix the three fine-grained materials of quartz sand, gypsum powder and talcum powder and stir evenly;

[0054] 3) Add the weighed mixing water and stir thoroughly;

[0055] 4) Heat the vaseline to 55°C to melt it into a liquid state;

[0056] 5) Mix the liquid petroleum jelly with the material obtained in step 3), and stir well;

[0057] 6) Cool at room temperature for 5 minutes, ready to serve.