High temperature and high pressure conventional triaxial direct shear fracture seepage coupling test device and its application method
A high-temperature, high-pressure, testing device technology that is applied to measuring devices, using stable shear force to test material strength, and using stable tension/pressure to test material strength, etc., can solve the problem of rock triaxial direct shear fracture penetration problems such as performance testing and unsatisfaction, and achieve the effect of simple structure and cost reduction
A high-temperature, high-pressure, testing device technology that is applied to measuring devices, using stable shear force to test material strength, and using stable tension/pressure to test material strength, etc., can solve the problem of rock triaxial direct shear fracture penetration problems such as performance testing and unsatisfaction, and achieve the effect of simple structure and cost reduction
CN113109181BActive Publication Date: 2022-02-15NORTHEASTERN UNIV LIAONING
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[0077] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings. Among them, the directional nouns such as "up" and "down" mentioned in this article are based on figure 1 orientation as a reference.
[0078] refer to figure 1 and figure 2 , the embodiment of the present invention proposes a high temperature and high pressure conventional three-axis direct shear fracture-seepage coupling test device, including two shear indenters 1, two pressure components 2, a fixing component 3 and a pipetting component 4.
[0079] The two shear indenters 1 and the two pressure assemblies 2 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 . The fixed component 3 is sleeved on the rock sample 6, two shear pressure heads 1 and two pressure com...
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The invention relates to a high-temperature and high-pressure conventional three-axis direct shear fracture-seepage coupling test device. Two shear pressure heads and two pressure components are arranged above and below the rock sample in a manner symmetrical to the center of the rock sample. The shear ram includes first and second shear ram bodies. Pressure components include rubber bladders and backing plates. A portion of the pressure assembly is within the space formed by the height difference between the first and second shear rams. The rubber bladder applies pressure to the rock sample through the backing plate. The seepage medium in the first seepage network groove provided on the main body of the second shear pressure head and the second seepage network groove provided on the backing plate applies osmotic pressure to the rock sample. The triaxial testing machine applies lateral confining pressure, axial pressure and high temperature to the rock sample. The beneficial effect is that the test device can carry out conventional triaxial direct shear fracture seepage tests under high temperature and high pressure conditions. The simple structure, the optimized sealing design, the connection mode of the piston part and the rubber bladder, and the design of the liquid injection method greatly improve the practicability and reliability of the present invention.
Description
technical field [0001] The invention relates to the technical field of rock experiments, in particular to a high-temperature and high-pressure conventional three-axis direct shear fracture seepage coupling test device and a use method. Background technique [0002] With the in-depth development of resource mining and energy development in rock engineering, in order to facilitate the development of geothermal energy production, oil and gas production, deep well injection, carbon dioxide sequestration and nuclear waste treatment, it is necessary to predict and analyze the flow of seepage media through fracture networks. description, in order to better improve the technical capabilities of mining and development, and avoid the inaccurate prediction and description of seepage medium flowing through the fracture network during actual mining, which may cause earthquakes induced by seepage medium injection, CO 2 and the hazards of gas storage leaks. The basic occurrence environmen...
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Patent Timeline
15 Feb 2022
Publication
CN113109181B
- IPC
- G01N3/24; G01N3/02; G01N3/18; G01N15/08
- CPC
- G01N3/24; G01N3/18; G01N3/02; G01N15/0806; G01N15/0826; G01N2203/0019; G01N2203/0025; G01N2203/0048
- Inventors
- 刘造保; 刘斌慧