Research Of Coal Spontaneous Combustion Laws And Preventing Technology In Easy Self-ignition Coal Seam Exploiting Without Coal Pillar

The spontaneous combustion is one of the major calamities, which seriously influences safety production of coal mine. There is important significance for mastering the laws of Coal Spontaneous Combustion, Which is the base of preventing Technology.Firstly, They discourse simulated coal spontaneous combustion by the experiment station of coal spontaneous combustion, quantificational calculated characteristic parameters which reflect the degree of coal spontaneous combustion, such as oxygen consumption & heat conduction coefficient and coal burning period. Second, the discourse studies on law of coal spontaneous combustion in gob. It marked off the distribution chart of oxygen concentration & coal ply & air leak intensity by locale observation and academic calculation. According the calculated ultimate parameter, it also marked off the danger zero of coal spontaneous combustion in gob; the discourse studies on law of coal spontaneous combustion in others zone, Such as around laneway & around geologic conformation; the discourse studies on signal gases also that can verifies the ifects of preventing technology.According to the case of the HeBi diggings, the discourse puts forward Preventing Technology in job and around laneway by mastering the laws and characteristics of coal spontaneous combustion, Applying the Preventing Technology, we successfully tackle several accidents of coal spontaneous combustion. it is more effective to instruct the practice of anti-fire and fire-extinguishing in mining coal by this way.