SUBSTANTIATION OF PARAMETERS OF COAL LIABILITY TO SPONTANEOUS COMBUSTION
Purpose. Increase of the accuracy of time calculation of coal reaching the critical temperature characterizing the liability to spontaneous combustion. Methodology. Analytical and experimental investigations of the parameters influencing the heat exchange of a coal accumulation with the environment during its spontaneous heating. Results. The parameters characterizing the coal liability to spontaneous combustion have been investigated, and the analytical dependences for their calculation have been proposed. The complex criterion has been suggested that differs from the previously used one by the allowance for the methane throttling effect, the moisture evaporation and the coal response surface. Scientific novelty. The increase of the determination accuracy of the coal liability to spontaneous combustion by means of the additional allowance for the previously unknown parameters. Practical value. The refinement of the calculated value of the complex index will permit to develop the adequate measures for prevention of a fire hazard situation from occurrence.