Abstract
Statistics shows that the majority of accidents with fatal outcome are caused by methane and/or coal dust explosion. This leads to assumption that contemporary counter-explosion systems of various designs cannot be considered effective. Considering the growing threat of methane explosion in the coming years along with the development of deeper levels, the improvement of a system for protecting people in underground opening appears to be essential. This paper presents the results of the testing of the Automatic System from Methane Explosion in Coal Mines. The protective system consists of a wireless device for the detection of explosions and activation of a protective system, and an absorber with a pyrotechnic device ensuring the discharge of dispersed water. The protective system, at the command of the initiation signal, produces tailored dispersing water mist with droplet sizes in the range of 25–400μm along selected tunnel sections.
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