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Rock true triaxial test device

A test equipment, true triaxial technology, applied in the direction of testing material hardness, using stable tension/pressure testing material strength, instruments, etc., can solve the problems of central axis offset, low centering accuracy, etc., to maintain uniformity , Reduce the side friction effect, solve the effect of the centering problem

Active Publication Date: 2016-12-21
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a rock true triaxial test equipment, which solves the technical problems of low rock sample centering accuracy and central axis deviation in the true triaxial test in the prior art

Method used

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Embodiment Construction

[0042] The embodiment of the present application provides a rock true triaxial test equipment, which solves the technical problems of low centering accuracy and central axis deviation of the rock sample in the true triaxial test in the prior art; achieves improved centering reliability , to ensure the stable and reliable technical effect of the true triaxial test.

[0043] 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:

[0044] By setting the floating frame such that the applied σ 2 The symmetry of the central axis is kept stable; the side friction effect is further effectively reduced by the lateral pressure plate, and the applied σ 2 uniformity.

[0045] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. I...

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Abstract

The invention belongs to the technical field of rocks and soil mechanics and geotechnical engineering and discloses a rock true triaxial test device which comprises a vertical loading system, a horizontal loading system, a counterforce frame, a triaxial chamber and a floating frame, wherein the vertical loading system is arranged on the upper part of the counterforce frame; the triaxial chamber is fixed on the counterforce frame; the floating frame is movably connected with the triaxial chamber through a sliding connector and is capable of sliding relative to the triaxial chamber along the horizontal direction; the floating frame comprises a first fixing plate, a second fixing plate and a guiding rod connected between the first and second fixing plates; the guiding rod is movably connected with the triaxial chamber through a sliding pipe sleeve arranged on the triaxial chamber; the horizontal loading system comprises a first force applying component and a second force applying component opposite to the first force applying component; the first force applying component is fixed on the first fixing plate; the second force applying component is fixed on the second fixing plate. The invention provides the rock true triaxial test device with high aligning stability.

Description

technical field [0001] The invention relates to the technical fields of rock-soil mechanics and rock-soil engineering, in particular to a rock true triaxial test equipment. Background technique [0002] The study of rock mechanical properties, constitutive relations, strength criteria, and failure mechanism is the most basic and core content in the field of rock mechanics and engineering. At present, relevant research is mainly carried out through uniaxial, biaxial, and conventional triaxial tests. Since the surrounding rock of underground engineering is in a three-dimensional stress state before excavation, considering the characteristics of rocks under three-dimensional stress state and two-dimensional and one-dimensional stress state There are large differences in rock properties, such as the rock strength criterion. Under the two-dimensional stress state, it is believed that the failure of rock is only related to the maximum and minimum principal stresses, and has nothin...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N3/12G01N3/42G01N15/08
CPCG01N3/08G01N3/12G01N3/42G01N15/082G01N2203/0003G01N2203/0019G01N2203/0037G01N2203/0048G01N2203/006G01N2203/0076G01N2203/0256
Inventor 周辉张传庆崔国建汤艳春胡大伟刘继光
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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