To prevent the caved area of a colliery from spontaneous fire and to find it as early as possible,an equation is given with analytic solution and proved in conformity with the actual situation,of which the pattern of gas moving in the area is expressed.

The causes of spontaneous combustion and the analysis on fire-prevention methods in long-wall caving mining;

The suable study of the confirmation of fire causes and responsibility of fire accidents;

Clustering in early recognition of coal mine internal-caused fire based on genetic algorithm;

The internal-caused fire is one of the disasters in coal mine.