Study On The Fire Fighting Technique Of The Coal Spontaneous Combustion Of Full Mechanized Top Coal Caving Mining

As one of the major coalmine calamieies, the coal spontaneous combustion of full mechanized top coal caving mining seriously influences mine safety production, there is important significance for coalmine fire fighting and safety production that determined coal spontaneous combustion zone and doping coal spontaneous combustion period and the distribution chart of high temperature spot.First, the numerical simulation and characteristic parameters combustion experiment over of coal, such as oxygen consumption, heat conduction coefficient and coal spontaneous combustion period, is included in this paper. According to determination theory of coal spontaneous combustion prediction is applied to fully mechanized caving working face and gob. Second the distribution chart of gob oxygen concentration, coal ply and air leak intensity is marked off. And according to limit parameter, the paper marked off also coal spontaneous combustion zone of gob and calculated limit advancing speed, the prediction result and infact result of gob coal spontaneous combustion is validate by theory prediction local practice. Finally according to determination and prediction of coal spontaneous combustion, zone, the paper introduces fire fighting technique of full mechanized top coal caving mining and applies colloid fire fighting technique to dispose hight temperature spot.