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Shear-and-low-temperature coupling experimental device and method for through cracks

An experimental device and fissure technology, applied in the field of fracture mechanics and rock mechanics, can solve the problem of no relevant introduction, etc., and achieve the effect of easy processing and production

Active Publication Date: 2018-06-26
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no introduction about low temperature-shear coupling equipment and tests in fractured rock mass.

Method used

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  • Shear-and-low-temperature coupling experimental device and method for through cracks
  • Shear-and-low-temperature coupling experimental device and method for through cracks

Examples

Experimental program
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Effect test

Embodiment 1

[0030] In this embodiment, 3D printing technology is used to prepare a crack specimen of photosensitive resin material. The length and width of the specimen are both 10 cm, and the height of the specimen is 6 cm; the length of the crack is 4 cm, and the shape is a cuboid structure. When carrying out the test, the lower temperature control panel 10 is placed above the base, and the lower temperature control panel 10 is connected to the real-time temperature control box 9, so as to ensure that the temperature at the bottom is transmitted to the test piece in real time, and the real-time temperature control box 9 can be intuitively See the temperature and time settings. Then place the crack test piece above the lower temperature control plate 10, the crack test piece is vertically fixed end 5, apply vertical force to the vertical fixed end, and then the two X-direction loading heads can be loaded in the horizontal direction , the size of the horizontal loading force given by each...

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Abstract

The invention relates to a shear-and-low-temperature coupling experimental device and method for through cracks. The device comprises a DIC image, a loading driving motor, a collecting instrument, a base and a computer; a lower temperature control flat plate is fixed on the upper surface of the base, and the lower temperature control flat plate is connected with a real-time temperature control box, a crack test piece is fixedly placed on the real-time temperature control box, upper transparent tempered glass is placed on the upper surface of the crack test piece, and the upper transparent tempered glass and the lower temperature control flat plate are fixed together by fixing bolts; the crack test piece has a vertical fixed end in the vertical direction, rigid supports are fixed to the left and right sides of the crack test piece in the horizontal direction, the left rigid support and the right rigid support are staggered up and down relative to the center of the crack test piece, a pressure regulating valve is arranged on each loading force, and the loading force is controlled through the pressure regulating valve. The crack test piece is a 3D printing test piece. The device usesa photosensitive resin material to simulate the actual situation of the actual rock non-straight cracks, which can improve the fracture damage understanding of the cracks under stress.

Description

technical field [0001] The invention relates to the technical fields of rock mechanics and fracture mechanics, in particular to a shear-low temperature coupling experimental device and method for penetrating cracks. Background technique [0002] The fractured rock mass is formed by long-term geological tectonic action, composed of matrix rock blocks and structural planes and has certain structural characteristics, and exists in a discontinuous, multi-phase rock mass in a certain physical address environment (earth stress, groundwater and low temperature, etc.). . Anisotropic geological bodies. Due to tectonic stress and various excavation disturbances, the interior of the fractured rock mass is rich in various defects, including macroscopic discontinuous structural surfaces such as microcracks, holes, and joint fissures. Adjacent fissures penetrate, and finally lead to the destruction of the entire rock mass. The strength reduction of rock mass caused by crack expansion n...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N3/24
CPCG01N1/28G01N3/24G01N2203/0025G01N2203/0228
Inventor 熊骋望马国伟董茜茜
Owner HEBEI UNIV OF TECH
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