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Rock naked triasial compression test apparatus and test method

A technology of triaxial compression and test device, which is applied in the direction of measuring device, using stable tension/pressure test material strength, instrument, etc., can solve the problem of inability to accurately simulate mechanical properties and so on

Active Publication Date: 2015-12-23
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

Therefore, the rock triaxial compression test device cannot accurately simulate the mechanical properties of the near-field confining pressure of the core sample 18

Method used

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  • Rock naked triasial compression test apparatus and test method
  • Rock naked triasial compression test apparatus and test method
  • Rock naked triasial compression test apparatus and test method

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Embodiment

[0086] The purpose of the embodiments of the present invention is to provide a rock bare triaxial compression test method for evaluating the mechanical properties of rock under the action of high-pressure liquid, and to provide corresponding test supporting devices.

[0087] Bare triaxial compression test, that is, remove the protective sleeve (heat shrinkable tube) on the rock surface in the ordinary triaxial compression test, so that the core sample is in direct contact with the high-pressure engineering liquid, revealing the mechanical properties of the rock and the high-pressure liquid interaction. The smooth progress of the bare triaxial compression test must have a matching test device. The present invention intends to provide a bare triaxial test operation method and a corresponding test supporting device.

[0088]Carrying out the bare triaxial test is not as simple as directly removing the protective sleeve (heat-shrinkable tube) on the surface of the core sample. The f...

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Abstract

The invention discloses a rock naked triasial compression test apparatus and a test method, and relates to the field of a technology for testing the intensity characteristic of solid materials by using mechanical stress. During application, a whole body is placed in a triaxial cell, the whole body comprises a container, an airbag, a communicating pipe and a piston, a naked rock core sample is accommodated in a container, and the container is communicated with an airbag by a communicating pipe. An engineering fluid is injected into the container, so that the sample directly contacts the engineering fluid; high pressure hydraulic oil of the triaxial cell is used for transmitting the high pressure to the engineering fluid by an airbag, so that the high pressure engineering fluid directly contacts the sample, thereby the naked triaxial test is developed, the near field surrounding rock mechanical property is simulated, and a more accurate service is provided for the engineering stability evaluation. In addition, a chamber and the airbag separate the engineering fluid and the hydraulic oil, the pressure between the chamber and the triaxial cell is balanced, a seal is provided, so that in the test process, a mixing of the engineering fluid and the hydraulic oil is prevented, and entrance of the collapsed and scattered sample into the hydraulic oil is avoided.

Description

technical field [0001] The invention relates to the technical field of testing the strength characteristics of solid materials by mechanical stress, in particular to a rock bare triaxial compression test device and test method. Background technique [0002] Rock triaxial compression test is an important test to obtain rock mechanical parameters. In order to apply confining pressure to the rock ring direction, aviation hydraulic oil is generally used to pressurize, and a layer of clothes is put on the surface of the cylindrical sample, that is, a set of heat-shrinkable tube (film) or rubber sleeve is added to prevent the hydraulic oil and The core samples are in direct contact. For example, the Chinese invention patent whose application publication number is CN103344496A discloses a rock triaxial compression-water (air) coupling device and test method, see attached figure 1 , the device includes axial pressure servo system, confining pressure servo system, water (air) press...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01N3/02
Inventor 马洪岭杨春和施锡林
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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