Acoustic Emission (AE) Propagation Attenuation Theory and Rule in Non-Perfect Elastic Coal and Rock

Guo Wei Dong

doi:10.4028/www.scientific.net/AMM.477-478.620

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 477-478Acoustic Emission (AE) Propagation Attenuation...

Acoustic Emission (AE) Propagation Attenuation Theory and Rule in Non-Perfect Elastic Coal and Rock

Abstract:

Propagation rule of acoustic emission (AE) signal in coal and rock is an important basis when AE technique forecasts coal and rock dynamical disasters. Based on correlative theory of quality factor Q, Acoustic emission signal propagation attenuation formula in non-perfect elastic coal and rock are analyzed, Based on the theoretic formula, Effects of different quality factor and propagation distance on AE propagation attenuation are theoretically analyzed ;Based on theoretic analysis results, AE signal propagation numerical simulation and field test programs are designed, AE signal propagation rules in elastoplastic coal and rock are obtained. Field test and numerical simulation experimentation results validate rationality of theoretic forumla. Study production can guide AE technique that forecasts mine and rock dynamical disasters.

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Periodical:

Applied Mechanics and Materials (Volumes 477-478)

Pages:

620-623

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.477-478.620

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Online since:

December 2013

Authors:

Guo Wei Dong*

Keywords:

Acoustic Emission (AE), Coal and Rock, Non-Perfect Elastic, Propagation Attenuation Rule

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