Vibration Signal Time-Domain Characteristic Extraction for Coal and Rock Recognition at the Fully Mechanized Top-Coal Caving Face

Shi Gang Zhu; Guang Hui Xue; Xin Ying Zhao; Er Meng Liu; Miao Wu

doi:10.4028/www.scientific.net/AMM.556-562.2862

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 556-562Vibration Signal Time-Domain Characteristic...

Vibration Signal Time-Domain Characteristic Extraction for Coal and Rock Recognition at the Fully Mechanized Top-Coal Caving Face

Abstract:

In order to avoid the over discharge and less discharge situations, improve the coal recovery rate and promote the working environment of workers at the fully mechanized top-coal caving face, experiments for the research of the coal and rock character recognition were carried on underground. Vibration signal at the hydraulic support tail beam and the rear scraper conveyor under different conditions were acquired at the fully mechanized top-coal caving face using the self-developed mine portable data recorder. The time-domain indexes of the vibration signal were analyzed. Results show that the variance, skewness index and kurtosis index changes most obviously under various stage of top coal caving and can be used as the time-domain characteristic indicator for the coal and rock character recognition in the fully mechanized working face.

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Periodical:

Applied Mechanics and Materials (Volumes 556-562)

Pages:

2862-2865

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.556-562.2862

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Online since:

May 2014

Authors:

Shi Gang Zhu*, Guang Hui Xue, Xin Ying Zhao, Er Meng Liu, Miao Wu

Keywords:

Coal Character Recognition, Fully Mechanized Top-Coal Caving Face, Rock Character Recognition, Time-Domain Characteristic Indicator, Vibration Monitoring

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* - Corresponding Author

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