WANG Xiao-nan, LU Cai-ping, XUE Jun-hua, et al. Experimental research on rules of acoustic emission and microseismic effects of burst failure of compound coal-rock samples[J]. 2013, 34(9).
WANG Xiao-nan, LU Cai-ping, XUE Jun-hua, et al. Experimental research on rules of acoustic emission and microseismic effects of burst failure of compound coal-rock samples[J]. 2013, 34(9).DOI:
The acoustic emission (AE) and microseismic (MS) rules in the process of deformation and failure of samples combined with roof
coal and floor are very important to reveal the dynamic mechanism of rockburst. The compound samples were tested by SANS material testing system under uniaxial compression condition. During the whole test process
the AE and MS events were monitored by DISP-24 AE system and TDS-6 MS collection system. The results showed that the larger the uniaxial compressive strength
rockburst tendency and the ratio of roof height to coal height of compound samples are
the stronger the intensity of AE and MS signal is. The amplitude of MS signal can reflect the rockburst tendency of compound samples. The spectrum distribution of MS signal in the high frequency band will increase along with the increasing compressive strength and impact energy index of samples. The above conclusions are of great significance to evaluate