Rock sample torsion fracture breaking experimental device and simulated rock sample torsion fracture breaking method

A technology for rock samples and failure experiments, applied in measuring devices, using stable torsional force to test the strength of materials, instruments, etc., can solve the problems of rock torsional cracking, lack of equipment, etc. Wide range of effects

Active Publication Date: 2018-06-12
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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Problems solved by technology

[0003] At present, there is still no targeted equipment in this field, which means that the torsional fracture failure of rocks cannot be truly tested, which undoubtedly brings insurmountable difficulties to the corresponding research on this issue

Method used

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  • Rock sample torsion fracture breaking experimental device and simulated rock sample torsion fracture breaking method
  • Rock sample torsion fracture breaking experimental device and simulated rock sample torsion fracture breaking method
  • Rock sample torsion fracture breaking experimental device and simulated rock sample torsion fracture breaking method

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Embodiment Construction

[0034] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0035] refer to figure 1 with figure 2 , figure 1 A schematic diagram of the structure of the rock sample 5 torsional fracture failure test device is shown; figure 2 Shows the cross-sectional view of the rock sample 5 torsional fracture failure experimental device; as figure 1 with figure 2 As shown, the rock sample 5 torsion cracking failure experimental device comprises main frame 2, control module (preferred contr...

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Abstract

The invention discloses a rock sample torsion fracture breaking experimental device and a simulated rock sample torsion fracture breaking method. The device comprises a primary machine frame, a primary hydraulic cylinder group and a double rod hydraulic cylinder group are installed on an upper crossbeam and a lower crossbeam respectively, and a load sensor is arranged at the end, penetrating through the upper crossbeam, of a primary piston rod of the primary hydraulic cylinder group; an anti-rotation mechanism is arranged at the position, facing directly to the primary piston rod, of the lowersurface of the upper crossbeam; the anti-rotation mechanism is provided with a sample upper pressing block; one end of a secondary piston rod of the double rod hydraulic cylinder group penetrates through the lower crossbeam and is provided with a sample lower pressing block, and a groove fitted with the groove formed in the sample upper pressing block is formed in the sample lower pressing block;the other end of the secondary piston rod penetrates through a secondary cylinder and is provided with an upper bearing; one side of the lower crossbeam is provided with a power output mechanism, andthe power output mechanism is connected with a connecting shaft through a transmission mechanism; the connecting shaft is provided with a torque sensor, and the other end of the torque sensor is fixedly connected with the end on which the bearing is arranged of the secondary piston rod.

Description

technical field [0001] The invention relates to a rock mechanical performance testing device, in particular to a rock sample torsion cracking failure experimental device and a method for simulating the rock sample torsion cracking failure. Background technique [0002] As underground mining continues to penetrate deeper into the earth, the problem of rock fracture becomes more complex. In addition to the typical rockburst, rock burst, and high water pressure that may cause rock fracture, the fracture mode tends to be more complicated. Rock torsional fracture failure is a kind of anti-plane shear failure caused by three-dimensional force. The essential cause of rock failure is the initiation and expansion of internal micro-cracks, and the process of interpenetration between cracks, and finally the formation of macroscopic fracture surfaces. , and rock fracture methods are more complex. [0003] At present, there is still no targeted equipment in this field, which means that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/22
CPCG01N3/22G01N2203/0021G01N2203/0048G01N2203/0067
Inventor 刘祥鑫张艳博姚旭龙梁鹏
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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