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High-temperature and high-pressure true triaxial direct shear fracture seepage coupling testing device and use method thereof

A high-temperature, high-pressure, testing device technology that is applied to measuring devices, using stable shear force to test material strength, using stable tension/pressure to test material strength, etc. Shear rupture testing addresses issues such as high temperature and high osmotic pressure environments to reduce costs

Active Publication Date: 2021-08-24
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a high-temperature and high-pressure true triaxial direct shear fracture seepage coupling test device and its use method, which solves the problem that high temperature and high osmotic pressure cannot be provided for the true triaxial direct shear fracture test of rocks. Environmental conditions, unable to meet the technical problems of direct shear fracture seepage coupling test in the multiple coupling environment of high temperature-high osmotic pressure-high lateral confining pressure on rock samples at the same time

Method used

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  • High-temperature and high-pressure true triaxial direct shear fracture seepage coupling testing device and use method thereof
  • High-temperature and high-pressure true triaxial direct shear fracture seepage coupling testing device and use method thereof
  • High-temperature and high-pressure true triaxial direct shear fracture seepage coupling testing device and use method thereof

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Embodiment 1

[0096] refer to Figure 1-Figure 3As shown, the embodiment of the present invention proposes a high temperature and high pressure true triaxial direct shear fracture seepage coupling test device for performing unidirectional shear test on rock sample 6, which includes two first indenters 1, two second Two pressure heads 2, two pressure components 3 and a pipetting component 4. The two first indenters 1 and the two pressure assemblies 3 are respectively arranged on the upper and lower sides of the rock sample 6 in a symmetrical manner with respect to the center of the rock sample 6 . Two second indenters 2 are arranged on the left and right sides of the rock sample 6 in a symmetrical manner with respect to the center of the rock sample 6 . The pipetting assembly 4 is used to inject hydraulic oil into the first pressure head 1 and the pressure assembly 3 .

[0097] After the first indenter 1, the second indenter 2, the pressure assembly 3 and the rock sample 6 are assembled, t...

Embodiment 2

[0155] refer to Figure 12 and Figure 13 As shown, the embodiment of the present invention proposes a high temperature and high pressure true triaxial direct shear fracture seepage coupling test device for bidirectional shear test on rock sample 6, including two first indenters 1, two second indenters Head 2 and four pressure components 3 . Wherein, the structure of the first pressure head 1 and the second pressure head 2 are the same, the structures of the four pressure components 3 are the same, and the assembly method between the first pressure head 1 and the corresponding pressure components 3 is the same as that of the second pressure head 2 and the The corresponding pressure components 3 are assembled in the same way. The two first indenters 1 and the two pressure assemblies 3 are respectively arranged on the upper and lower sides of the rock sample 6 in a manner symmetrical to the center of the rock sample 6, and the two second indenters 2 and the two pressure assemb...

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Abstract

The invention relates to a high-temperature and high-pressure true triaxial direct shear fracture seepage coupling testing device. Two first pressure heads and two pressure assemblies are arranged above and below a rock sample in a manner of being symmetrical about the center of the rock sample. The two second pressure heads are arranged on the left and right sides of the rock sample in a central symmetry manner relative to the rock sample. The first pressing head comprises a first pressing head body provided with a groove part. A part of the pressure assembly is accommodated in the groove part. The pressure assembly comprises a rubber capsule and a base plate, and the rubber capsule applies pressure to the rock sample through the base plate. Seepage media in a first seepage network groove formed in the first pressure head main body and a second seepage network groove formed in the base plate apply seepage pressure to the rock sample. The triaxial testing machine applies lateral confining pressure, axial pressure and high temperature to the rock sample. The true triaxial direct shear fracture seepage testing device has the beneficial effects that the true triaxial direct shear fracture seepage testing device is combined with a triaxial testing machine, a true triaxial direct shear fracture seepage test can be carried out on a rock sample under high-temperature and high-pressure conditions, and the practicability and the reliability are relatively high.

Description

technical field [0001] The invention relates to the technical field of rock experiments, in particular to a high-temperature, high-pressure true triaxial direct shear fracture seepage coupling test device and a use method. Background technique [0002] Resource extraction and energy development in geotechnical engineering include nuclear waste treatment, carbon dioxide sequestration, deep well injection, geothermal energy production, and oil and gas production. With the continuous utilization of resources in shallow geotechnical engineering, the mining depth of geotechnical engineering has continued to increase. The basic occurrence environment of deep geotechnical engineering is a high-temperature, three-dimensional, high-stress, and high-fluid-pressure environment. In order to better improve the safety of deep geotechnical engineering mining and development, avoid fluid medium injection into rock fractures to induce earthquakes and CO 2 Casualties and construction delays ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/24G01N15/08G01N3/02G01N3/18
CPCG01N3/24G01N15/0826G01N15/0806G01N3/18G01N3/02Y02P90/70
Inventor 刘造保刘斌慧郝良吴名李航徐建宇
Owner NORTHEASTERN UNIV
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