Coal bump is sudden catastrophic failure of coal and usually causes serious problems to underground coal
mining. The acoustic and thermal infrared radiation (TIR) characteristics of bump-prone coal under uniaxial
compression and cyclic loading conditions are investigated in this study. The monitoring system consists of a
TIR observation system, a stress and strain measurement system and an acoustic emission monitoring
system. Precursory information for impending failure of coal samples is collected, including TIR, acoustic
emission and strain precursors. Moreover, the response speed and the sensitivity of different monitoring
systems during the cracking events in the samples are studied under different loading conditions. The
microstructure of coal sample is analyzed by X-ray computerized tomography (CT) and scanning electron
microscope (SEM). The experiment results show that 0.9σc (σc is the compressive strength) and 0.82σc can
be regarded as the stress-caution-points for the failure of bump-prone coal under uniaxial compression and
under uniaxial cyclic compression, respectively. They are much higher than 0.79σc as the stress-cautionpoint
for the normal coal samples. It is also indicated that the temperature at coal surface or in the coal mass
should be monitored at the perimeter of the site with anticipated collapses. It can be a valuable tool to obtain
the precursors for mine disaster control such as coal bumps, gas outburst and water inrush.