Acoustic Emission (AE) Forecasting Rock Burst Key Technology

Abstract:

Acoustic emission (AE) technique is a trend of non-contact technique forecasting coal and rock dynamic disaster.Coal and rock AE propagation attenuation exponent function on different AE frequencies, different quality factors and different propagation distance are acquired by theory and numerical simulation and actual experiment; the effect of AE sensor installation manners on coal and rock surface , coal and rock bottom and wave guide are studied, the results show that the effect of AE sensor installation manner on wave guide is better than on coal and rock surface ,equivalent to installation manner on coal and rock hole bottom. Based on above study results, actual rock bursts are successfully forecasted.

• Periodical: Advanced Materials Research (Volume 868)
• Pages: 314-318
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.868.314
• Online since: December 2013
• Authors: Guo Wei Dong
• Keywords: Acoustic Emission (AE), AE Sensor Installation Technique, Coal and Rock Body, Propagation Rule, Rock Burst

References

[1] Zou Yinhui. Acoustic Emission monitoring technique of coal and gas outburst[R]. Chongqing: Chongqing Coal Research Institute, (2003).

[2] Yuan Zhenming, Ma Yukuan, Technology and application of Acoustic Emission[M]. Beijing: Mechanical Industry press, (1985).

[3] Teng Shanbangjiu, Application of Acoustic Emission[M]. Translated by Feng Xiating. Beijing: Metallurgical Industry press, 1996, 52-54.

[4] A.C. Eringen, E.S. Suhubi. Elastic dynamics [M]. Beijing: Oil industry press, (1984).

[5] Zou Yinhui, Wen Guangcai, Hu Qianting. Theory analysis and experimental study of the spread and attenuation of acoustic emission in rock body[J]. Journal of China Coal Society, 2004, 29(6): 663-667.

[6] Zou Yinhui, Dong Guowei, Li Jiangong. AE propagation attenuation theory and rule in wave guide [J]. Journal of China Coal Society, 2007, 648-651.