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Tension, pressure and ring-shear tester for rock

A tester and pressure ring technology, used in instruments, using a stable shear force to test the strength of materials, scientific instruments, etc., can solve the problem of discontinuity in failure, uneven distribution of shear stress, and inability to truly reflect the output direction of shear stress. It can solve problems such as the stress state, and achieve the effect of continuous and uniform shear deformation, uniformity of shear stress distribution, and accurate rock shear strength parameters.

Active Publication Date: 2017-01-25
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a rock tension-compression ring shear tester, which solves the problem of uneven distribution of shear stress on the shear surface, discontinuous damage, and failure to truly reflect the impact on the shear stress output direction in the prior art during the shear process of rock samples. technical issues

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  • Tension, pressure and ring-shear tester for rock
  • Tension, pressure and ring-shear tester for rock

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Embodiment Construction

[0036] The embodiment of the present application provides a rock tension-compression ring shear tester to solve the problem of uneven distribution of shear stress on the shear surface, discontinuous damage, and different shear stress output directions in the prior art during the shearing process of rock samples. Technical issues: The technical effect of improving the rock shear strength parameters, the accuracy of shear deformation changes, the integrity, and the rock constitutive relationship has been achieved.

[0037] In order to solve the above technical problems, the general idea of ​​the technical solution provided by the embodiment of the present application is as follows:

[0038] Through the torque loading system, the torque of the ring columnar rock sample is uniformly applied to ensure continuous and uniform deformation; and through the independent operation of the axial loading system and the torque loading system, combined with the cooperation of the upper and lowe...

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Abstract

The invention belongs to the technical field of mechanical testing devices for rock and discloses a tension, pressure and ring-shear tester for the rock. The tester comprises a base, a lower shear box, an upper shear box, a first framework, a second framework, an axial loading system and a torque loading system; the first framework is fixed on the base, and the second framework is fixed on the first framework; the axial loading system is fixed on the second framework, and the upper shear box is fixed at an output terminal of the axial loading system; the torque loading system is fixed on the second framework; the lower shear box is fixed on the base; the upper shear box and the lower shear box are arranged oppositely; an annular upper sample groove is formed in the upper shear box, and an annular lower sample groove matched with the annular upper sample groove is formed in the lower shear box; the torque loading system is connected with the output terminal of the axial loading system and is used for applying horizontal torque. The tester provided by the invention can be used for really simulating a stress state of the rock.

Description

technical field [0001] The invention relates to the technical field of rock mechanics test devices, in particular to a rock tension-compression ring-shear tester. Background technique [0002] The shear strength of rock is the ability of rock to resist shear failure, and it is one of the important characteristics required in rock mechanics research. In the field of geotechnical engineering, test methods are widely used to determine the shear strength index of rock. The test methods for measuring the shear strength of rock can be divided into two categories: indoor test and field test. Among them, indoor tests usually include direct shear test, wedge shear test and triaxial compression test. Field tests are usually direct shear tests. [0003] Analysis of the existing test method, the test loading method and the selection of the sample structure make the shear stress distribution on the shear surface uneven during the shear process, and the shear surface is progressively d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/24
CPCG01N3/24G01N2203/0025
Inventor 周辉姜玥卢景景张传庆胡大伟高阳陈珺
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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