Coal rock mechanical parameter detector and method for measuring mechanical parameters of coal rock
A technology of mechanical parameters and detectors, applied in the direction of analyzing solids using sound waves/ultrasonic waves/infrasonic waves, can solve the problem of inability to accurately reflect the mechanical properties of dynamic changing conditions of coal and rock, difficulty in showing the complexity of crack changes in coal and rock specimens, and inability to Accurately reflect the dynamic changes of cracks in coal and rock specimens, and achieve accurate detection results
Inactive Publication Date: 2015-04-29
CHINA UNIV OF MINING & TECH (BEIJING)
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The invention discloses a coal rock mechanical parameter tester and a method for measuring mechanical parameters of coal rock. The coal rock mechanical parameter tester comprises a uniaxial pressure machine and an ultrasonic detector. According to the method, an emitter electrode and a receiver electrode of the ultrasonic detector are respectively fixed to two sides of a coal rock test piece; and after an ultrasonic signal passes through the coal rock test piece, an ultrasonic detector signal processing unit will display a received ultrasound parameter. The uniaxial pressure machine can produce different uniaxial pressure on the coal rock test piece. When ultrasonic wave passes through the coal rock test piece which is under the action of uniaxial pressure, the ultrasonic detector signal processing unit will display different ultrasound parameters. By analyzing changes of the ultrasound parameters, mechanical parameters of the coal rock test piece can be obtained. The detector capable of measuring mechanical parameters of coal rock has a simple structure, is convenient to carry, has accurate and reliable test data and can dynamically detect mechanical parameter changes of coal rock so as to further analyze fracture evolution rules of the coal rock test piece under the action of uniaxial pressure.
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