Analysis of spontaneous combustion "three-zone" in goaf based on Matlab

According to the problem that spontaneous combustion "three-zone" distribution in goaf could not be excellently observed by two-lane layout observation points,the method of whole line layout observation points along the face was presented.Spontaneous combustion "three-zone" observation was selected in a testing face.Datum of O2,CO2,CH4 concentration and temperature were observed.Stereo distribution and contour pictures of O2,CO2,CH4 concentration and temperature were generated by Matlab.Oxygen was used as the standard of dividing spontaneous combustion "three-zone".Spontaneous combustion "three-zone" distribution in goaf was obtained by Matlab and each observation point spontaneous combustion "three-zone" range was obtained from the pictures.At last,using the superposition of O2,CO2,CH4 concentration and temperature,dangerous area range in goaf was gotten.