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One-dimensional stress wave rock test piece dynamic tester

A dynamic test and stress wave technology, applied in the direction of using a single impact force to test the strength of materials, can solve problems such as the inability to study the interaction law between stress waves and rock mass specimens, and the uncontrollable form of stress waves.

Active Publication Date: 2013-09-25
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

In this technical field, although the commonly used experimental techniques of Hopkinson rod impact and explosive blasting can study the interaction law between the rock mass specimen and the stress wave, the form of the dynamically loaded stress wave cannot be controlled, and the stress wave The frequency is generally in the high frequency band around 1KHz, and it is impossible to study the interaction law between the stress wave in the middle and low frequency band and the rock mass specimen

Method used

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  • One-dimensional stress wave rock test piece dynamic tester
  • One-dimensional stress wave rock test piece dynamic tester
  • One-dimensional stress wave rock test piece dynamic tester

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Embodiment Construction

[0033] The invention discloses a one-dimensional stress wave rock mass test piece dynamic tester, which facilitates the research on the interaction law between the one-dimensional controllable stress wave and the rock mass test piece under different loading rates.

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] Please refer to figure 1 and figure 2 , figure 1 Schematic diagram of the structure of the one-dimensional stress wave rock mass test piece dynamic tester provided by the embodiment of th...

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Abstract

The invention discloses a one-dimensional stress wave rock test piece dynamic tester. The tester provided by the invention comprises a pedestal (15), an input bar (6) and an output bar (12) which are fixed on the pedestal (15), a stress wave output device for applying stress on the input bar (6) and a stress induction processing device for processing stress wave. The stress save output device comprises a vibration exciter (3) which is fixed on the pedestal (15) and used for applying impact force on the input bar (6), a servo control system connected with the vibration exciter (3), and a master controller (18) which is in communication connection with the servo control system and used for controlling impact signals applied on the vibration exciter (3) by the servo control system. The one-dimensional stress wave rock test piece dynamic tester provided by the invention is convenient for researches on interaction laws between one-dimensional controllable stress wave and a rock test piece at different loading rates.

Description

technical field [0001] The invention relates to the technical field of rock dynamics test equipment, in particular to a one-dimensional stress wave rock mass test piece dynamic tester. Background technique [0002] In the fields of earthquake engineering, blasting engineering, rock mass dynamics, etc., seismic shock waves and explosion stress waves are common dynamic loads in rock engineering. When the rock mass is subjected to dynamic loads, it often exhibits different mechanical properties from static loads, and the changes in its stress and strain states propagate in the form of stress waves. [0003] At present, in rock mechanics, the loading method for rock mass specimens is usually quasi-static loading, but the technology for testing the mechanical properties of rock mass specimens under quasi-dynamic or dynamic conditions is still far from perfect. In this technical field, although the commonly used experimental techniques of Hopkinson rod impact and explosive blasti...

Claims

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Application Information

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IPC IPC(8): G01N3/30
Inventor 詹志发祁生文黄晓林
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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