FIELD: mining industry, particularly to combat endogenous fire.
SUBSTANCE: method involves measuring indicative gas concentration in ambient air at coal and rock deposit outlet and inlet; calculating indicative gas concentration change during air passage through coal and rock deposit; measuring flow rate of air passed through coal and rock deposit; determining rate of indicative gas emission into air flowing through coal and rock deposit with taking into consideration of air flow rate and indicative gas concentration change; detecting coal self-ignition initiation on the base of above rate of indicative gas emission. Mathematical expressions to calculate rate of indicative gas, namely carbonic oxide, hydrogen, saturated and unsaturated hydrocarbon and radon emission are also disclosed.
EFFECT: increased efficiency of coal self-ignition detection and reduced economic losses concerned with endogenous fire, as well as increased safety of mine works.
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