The paper presents findings related to fighting the fire hazard at the “Pokój” mine on the example of longwall 424 in stratum 504. Until 17 April 2010, gas samples taken for analysis did not display any symptoms of an increase in the fire hazard, and the maximum Graham’s indicator was G=0.0007. In the morning of 18 April 2010, the carbon oxide sensor built into the longwall’s outlet, and the measurements taken in the longwall workings showed an increased concentration of carbon oxide, pointing to a very rapid increase in the fire hazard. In view of the above, the longwall was dammed and inerting of the area was commenced. The example of longwall 424 shows that the alteration dynamics of the fire hazard status in the area of an active longwall may be quite high. The lack of any symptoms pointing to the increase in the spontaneous fire hazard within a period of several months does not alter the fact that within just a few hours, the situation may change completely. Therefore, the elimination process of the fire hazard should be based on a continuous and comprehensive monitoring system which should include: a system of CO detectors, accurate chromatographic analyses for the whole area, use of inspection wells to adjacent and overlying workings, inspections and measurements conducted in the area by ventilation inspectors. In the case of longwall 424 in stratum 504, the capacity for rapid damming and inerting of the longwall’s area enabled the completion of the longwall’s excavation.
Artykuł przedstawia problemy i doświadczenia z prognozowaniem, wykrywaniem oraz zwalczaniem rozwoju pożaru endogenicznego w kopalni węgla kamiennego. Omówiono sposób prowadzenia rzeczywistej profilaktyki przeciwpożarowej w czasie eksploatacji ściany wydobywczej.