The stage analysis and countermeasures of coal spontaneous combustion based on "five stages" division.

ABSTRACT: The "three stages" division of coal spontaneous combustion is fuzzy and lacks adequate risk and warning levels corresponding to its divisions; additionally, the targeted prevention measures for each stage have not been described. To address the shortcomings of the "three stages" division, the "five stages" division was proposed to more clearly analyze the stage changes of the spontaneous combustion of coal. The "five stages" method divides the process of the spontaneous combustion of coal into five stages, including: the latent stage, heat accumulating stage, evaporation stage, active stage, and hypoxic stage. The critical point of each stage was determined using adiabatic oxidation experiments and programmed heat experiments. As the critical point of the latent stage, the temperature of z

SUBMITTER: Zhu H 

PROVIDER: S-EPMC6107200 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature