Forecast Method probability of explosions methane-air mixtures in mines

摘要

Method prediction probability methane mixtures of explosions in shafts, comprising registration in a given time period the number of mines that have committed an accident on explosions methane mixtures, and the likelihood of methane explosions metanoobilnosti workings, characterized in that the recorded cases of explosive zagazirovaniya mining, establish indicators probability zagazirovaniya workings and ignition of methane in them, the probability of explosions methane-air mixtures is determined product rates of the two probabilities mentioned phenomena of formuleB = B · B, where B is the probability of explosions methane-air mixtures; B index of probability zagazirovaniya workings; B- ignition probability methane; gdei- zagazirovaniya number of workings and the methane number of ignition respectively; u, respectively, the number of mines that have committed zagazirovanie workings of ignition and methane; u number of years of observation, respectively zagazirovaniya workings and ignition methane-air mixtures; N- observing the number of days in a given year.