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Rock mechanic testing machine capable of realizing continuous change of shear direction

A technology of rock mechanics and shear direction, applied in the field of geotechnical engineering, can solve the problems such as the failure to realize the experimental research of rock mass fracture surface, and achieve the effect of simple structure, convenient processing process and reducing error.

Pending Publication Date: 2019-01-25
HENAN POLYTECHNIC UNIV
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Problems solved by technology

[0003] Therefore, the traditional compression-shear test instrument can only complete the shear test with the direction of the normal load and the shear load fixed. For the experimental research of direction change, it is urgent to develop a rock mechanics testing machine that can continuously change the shear direction, so as to realize the accurate description of the rock mass fracture process and fracture mechanism in engineering

Method used

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  • Rock mechanic testing machine capable of realizing continuous change of shear direction
  • Rock mechanic testing machine capable of realizing continuous change of shear direction

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention is further described, see accompanying drawing.

[0022] A rock mechanics testing machine that continuously changes the shear direction, the testing machine is composed of a platform 10, a first gear 12, a motor 13, a second gear 20, a bearing 21, a bearing end cover 22, a pillar 23, a shear box, a Force device composition.

[0023] The bearing platform 10 is in the shape of a three-stage hollow cylindrical boss with varying outer diameters. The upper boss of the bearing platform 10 is symmetrically provided with threaded holes along the orthogonal direction, and the middle boss of the bearing platform 10 is provided with a keyway. The gear pin 19 is placed on the bearing platform. In the keyway of the middle boss of the platform 10, the second gear 20 is mounted on the outside of the middle boss of the platform 10 through the gear pin 19, and the bearing 21 is installed on the outside of the lower bo...

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Abstract

The invention relates to an indoor rock mechanical testing apparatus, in particular to a rock mechanic testing machine capable of realizing continuous change of shear direction and belongs to the technical field of geotechnical engineering. The testing machine comprises a bearing platform, a first gear, a motor, a second gear, a bearing, a bearing end cover, a supporting post, a shear box and a forcing device, solves the difficulty in changing the shear direction in the conventional shear test, can control applying of normal stress and shear stress and rotation of the shear surface individually or hybridly, is simple in structure and high in practicability, is applied to theory and test of rock mechanics, and can be used for precise description to a rock fracture process and a fracture system in engineering.

Description

technical field [0001] The invention relates to an indoor rock mechanics test device, in particular to a rock mechanics test machine capable of continuously changing the shear direction, and belongs to the technical field of geotechnical engineering. Background technique [0002] In geotechnical engineering, the failure of rock and soil mass is manifested in the form of compression shear failure and tensile shear failure. Among them, for the rock and soil mass with confining pressure or supported, compression shear failure is more common. Because the compression-shear loading measures are easy to implement, the research on the compression-shear test was earlier and widely used in the field of geotechnical engineering tests. When the traditional compression-shear test is used for the shear test, the vertical normal load is applied to the sample first, and then the normal load is kept constant, and the shear load parallel to the shear plane is applied. Perpendicular to and c...

Claims

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Application Information

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IPC IPC(8): G01N3/24G01N3/02
CPCG01N3/02G01N3/24G01N2203/0025G01N2203/0003
Inventor 李震刘火兴朱清华范利丹宋士杰
Owner HENAN POLYTECHNIC UNIV
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