Internal fire prevention and cure methods and its validity analysis

Abstract：This paper introduces the universal laws of coal spontaneous combustion under mines, and analyses several methods, such as the technology of extinguishing fires, the technology of pressure balance for air control, mine fire controlling by thick loess grouting, mine fire controlling by nitrogen gas etc; Meanwhile, it carries out validity analysis of these methods and refers to some precautions when using these methods to prevent the coal spontaneous combustion, thus, serveing for the safety production of mines better.

Keyword：coal spontaneous combustion; internal fire; prevention and extinction technology; validity analysis.;