Rock joint ultrasonic experimental apparatus under complex stress and control system thereof

A technology of rock joints and complex stress, applied in the field of testing and rock mechanics experiment of geotechnical engineering, to achieve the effect of simple structure and reasonable design

Pending Publication Date: 2017-02-22
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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Problems solved by technology

[0007] The purpose of the present invention is to provide a rock joint ultrasonic experiment device under complex stress and its control system, which solves the ultrasonic experiment of rock joints under complex stress state, and performs multi-axis composite loading on the joint rock sample through the servo hydraulic loading system. Realize any stress state on the rock joint surface, thereby solving the deficiencies of the above-mentioned prior art

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  • Rock joint ultrasonic experimental apparatus under complex stress and control system thereof
  • Rock joint ultrasonic experimental apparatus under complex stress and control system thereof
  • Rock joint ultrasonic experimental apparatus under complex stress and control system thereof

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Embodiment Construction

[0027] The present invention will be further described below in combination with specific embodiments and accompanying drawings.

[0028] The realization principle of the ultrasonic experimental device for rock joints under complex stress is as follows:

[0029] Such as figure 1 As shown, an ultrasonic experimental device for rock joints under complex stress uses a rock sample with a square axial section as the basic sample. There is a horizontal joint surface in the middle of the sample, and the rock sample is divided into two. The mechanical parameters of the rock sample, the shape of the joint surface, and the filling condition of the joint surface can be selected according to specific needs, which can be the sampling or reproduction of natural joints, or artificially designed for the purpose of research.

[0030] The force of the jointed rock sample is as follows: figure 1 As shown, the force on the upper and lower rock blocks on the joint surface is realized by a separa...

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Abstract

The invention discloses a rock joint ultrasonic experimental apparatus under complex stress and a control system thereof; the apparatus comprises a rigid frame, an experimental space is provided in the rigid frame, a horizontal sliding bearing plate is slidably disposed at the bottom of the rigid frame, a dynamometer, an axial ultrasonic vibration transducer, a tangential ultrasonic vibration transducer and an axial loading block are rigidly connected in sequence on the horizontal sliding bearing plate, an axial hydraulic driver is mounted atop of the rigid frame, the piston end of the axial hydraulic driver is in sequential rigid connection to the dynamometer, the axial ultrasonic vibration transducer, the tangential ultrasonic vibration transducer and the axial loading block, four tangential hydraulic drivers are horizontally mounted at the front, back, front and left of the rigid frame respectively, the piston ends of the tangential hydraulic drivers are each connected to a tangential loading piston, and the other ends of the tangential loading pistons are in sequential rigid connection to the dynamometer and the tangential loading block. The rock joint ultrasonic experimental apparatus under complex stress and the control system thereof allow stress field state of a joint face in underground rock to be simulated for ultrasonic dynamic experiment.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering rock mechanics experiments and tests, in particular to an ultrasonic experimental device for rock joints under complex stress and a control system thereof. Background technique [0002] Rock joints have a significant impact on the stress wave propagation in rock mass, and the complex mechanical properties of rock joints and their geological diversity lead to different stress wave transmission properties of different types of rock joints, so the stress wave transmission of rock joints The study of properties has remarkable significance. The study of stress wave transmission of rock joints plays an important role in studying the influence characteristics of joints on stress wave propagation and retrieving the mechanical properties of joints themselves. The research results are widely used in the fields of geotechnical engineering seismic response analysis, geological geophysical pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/02
CPCG01N3/02G01N2203/0026
Inventor 刘传正崔鹏张建经
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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