Study On The Fire Fighting Technique Of Coal Steep Seam Named 3232(3)working Face In LiZuizi Mine

The C13 coal of LiZuiZi mining with spontaneous combustion tendency, combustion period of 1 to 3 months. Coal dust explosion hazards with the explosion index of 39.93%, within the well field outburst. Since the 3232 (3) Face coal seam is thick, dip a large, gas content, it makes the increased risk of spontaneous combustion of coal.First, the numerical simulation and characteristic parameters combustion experiment over of coal by the XK-III experiment station, 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.