True triaxial hydraulic coupling test device for realizing visualization based on biaxial rheometer

A hydraulic coupling and test device technology, applied in the direction of measuring devices, using stable tension/pressure testing material strength, instruments, etc., can solve the problems of less research on evolution laws, unsatisfactory, lack of crack networks, etc.

Active Publication Date: 2019-11-26
TONGJI UNIV
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  • Description
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Problems solved by technology

At present, most studies on the evolution of cracks in surrounding rocks focus on the expansion mechanism of simple cracks (single cracks or parallel cracks) under a single load, and there are few studies on the evolution of crack networks considering the time effect in multi-cracked surrounding rocks. Especially for the surrounding rocks of deeply buried caverns, there is still a lack of research on the evolution mechanism of the fracture network under th

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  • True triaxial hydraulic coupling test device for realizing visualization based on biaxial rheometer
  • True triaxial hydraulic coupling test device for realizing visualization based on biaxial rheometer
  • True triaxial hydraulic coupling test device for realizing visualization based on biaxial rheometer

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Embodiment

[0029] Such as Figure 1-4 As shown, the present invention provides a real triaxial hydraulic coupling test device based on a biaxial rheometer to realize visualization, the device includes a loading gasket 1, an axial force transmission member 2, a biaxial rheometer loading plate 3, and a rubber gasket 4. Confining pressure seal ring 5, modified polycarbonate plate 6, fastening bolt 7, oil injection hole 8, water injection hole 9, pore water pressure seal ring 10. During the test, prepare a marble sample with a specification of 50mm×150mm×30mm, use a water jet to make a prefabricated crack through the middle of the front of the sample, cover the four sides of the sample with rubber confining pressure sealing ring 5, and use rubber The marble sample covered by the sealing ring 5 is fixed on the loading plate 3 through the loading pad 1 and the axial force transmission member 2 . Fix the pore hydraulic sealing ring 10 at the center of the front and back of the sample, seal the...

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Abstract

The invention relates to a true triaxial hydraulic coupling test device for realizing visualization based on a biaxial rheometer, thereby carrying out hydraulic coupling testing on a marble sample with front and rear surfaces having centers with penetrating cracks in a front-rear communication manner. The true triaxial hydraulic coupling test device comprises two modified polycarbonate plates thatare in a mutual butt joint manner to form square sealed inner space and a biaxial rheometer loading assembly for applying pressures on a marble sample in four directions. The marble sample is arranged in the sealed inner space; and the biaxial rheometer loading assembly applies pressures on the marble sample by the modified polycarbonate plates.. Compared with the prior art, the true triaxial hydraulic coupling test device has advantages of true three-axis loading, visual operation, and the like.

Description

technical field [0001] The invention relates to the field of stress loading tests of rock-like materials, in particular to a true triaxial hydraulic coupling test device for realizing visualization based on a biaxial rheometer. Background technique [0002] Under the influence of tectonic movement, unloading, weathering, etc., various types of discontinuous structural planes will be formed inside and on the surface of the rock mass, such as joints, faults, stratum dislocation planes, unloading cracks, weathering cracks, etc. These Structural planes together constitute the fracture network structure inside the rock mass, and their distribution characteristics and interactions are closely related to the mechanical properties of the rock mass. In deep-buried caverns, due to construction disturbance and seepage water pressure, the three-dimensional stress of the surrounding rock is redistributed, which can easily lead to the expansion and penetration of the fracture network, red...

Claims

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Application Information

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IPC IPC(8): G01N3/12G01N3/04G01N1/28
CPCG01N1/286G01N3/04G01N3/12G01N2203/0062G01N2203/0256
Inventor 赵程牛佳伦牛奕然周依盟李琳张睿幸金权
Owner TONGJI UNIV
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