Laterally constrained rock uniaxial compression test device

A technology of uniaxial compression test and confining compression, which is applied in the direction of measuring devices, using stable tension/pressure testing material strength, instruments, etc., can solve the problems of lack of test devices

Inactive Publication Date: 2014-07-02
SOUTHWEAT UNIV OF SCI & TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a laterally limited rock uniaxial compression test device, which solves the problem of lack of relevant test devices for the current research on the standard complete rock sample uniaxial compression test under confinement conditions

Method used

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] Such as figure 1 As shown, the present invention includes a resistive strain gauge 1, a T-shaped pressure bearing plate 2, a strain gauge 3, an annular cylindrical confined compression chamber 4 and an inverted T-shaped pressure bearing base 5; an annular cylindrical confined compressed chamber 4 It is composed of two semi-cylindrical shells with the same shape. There are screw holes on the edge of the two semi-cylindrical shells. The screws pass through the screw holes and will be fixed by the two semi-cylindrical shells to form a hollow cylinder. The annular cylindrical side is compressed The upper and lower openings of the chamber 4, the upper opening is provided with a T-shaped pressure bearing plate 2, and the T-shaped pressure bearing plate 2 is provided with a cylindrical protrusion extending into the interior of the annular cyl...

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Abstract

The invention discloses a laterally constrained rock uniaxial compression test device. An annular hollow cylindrical lateral confinement compression chamber is formed by two semi-cylindrical shells with the same shapes, screw holes are formed in the edges of the two semi-cylindrical shells, bolts penetrate through the screw holes to fix the two semi-cylindrical shells to form a hollow cylinder, the upper part and the lower part of the annular hollow cylindrical lateral confinement compression chamber are open, a T-shaped bearing plate is arranged on the upper opening, the T-shaped bearing plate is provided with a cylindrical heave to extend into the inner part of the annular hollow cylindrical lateral confinement compression chamber, the lower part of the annular hollow cylindrical lateral confinement compression chamber is arranged in a T-shaped port of the T-shaped bearing plate, two strain pieces are respectively installed on the surface of the two semi-cylindrical shells of the annular hollow cylindrical lateral confinement compression chamber, and the strain pieces are respectively connected with external resistance-type strain gages by leads. The invention provides the laterally constrained rock uniaxial compression test device, and uniaxial compression test of a rock sample can be carried out under annularly constrained condition by utilizing the device.

Description

technical field [0001] The invention belongs to the technical field of rock mechanics tests, and relates to a laterally limited rock uniaxial compression test device. Background technique [0002] In the practice of rock mechanics engineering, the experimental research of rock strength and deformation characteristics is a very important technical support. For rock uniaxial compression tests, under normal conditions, lateral unrestricted uniaxial compression is usually used to obtain mechanical parameters such as uniaxial compressive strength and elastic modulus of rock materials. However, laterally confined uniaxial compression tests of rocks are seldom carried out in realistic conditions. The nominal consolidation stress, brittle transition pressure and lateral pressure coefficient of the rock can be obtained by carrying out the laterally confined uniaxial compression test, which can provide more comprehensive and reliable theoretical guidance and technical support for roc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/02
Inventor 刘俊新刘育田樊晓一
Owner SOUTHWEAT UNIV OF SCI & TECH
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