Study On Coal Spontaneous Combustion Rule Of 2207 Work Face In The Cui-Jiagou Mine

The Cui-Jiagou mine is located in Jiao-Ping digging region which belongs to Hong-Long coalfield. It is a high gas gushing mine. Due to the coal deposit accrete with oil gas. There are as much as 5 kind of disasters be accompanying with mining. Especially, the 4-2 coal seam grew in Jurassic Yanan group, which is the most easily spontaneous combustion. And there have been being many coal spontaneous combustion disasters since it's starting. Thereby, the key study in the paper is aiming as fighting to coal spontaneous combustion. The research work would begin from ventilation in work face, gas drainage and exploition, gap temperature and index gases of spontaneous combustion, discover and analyze the trouble factors for gap spontaneous combustion hidden in mining process. To summarizing the special rules of spontaneous combustion in full mechanized caving mining condition.Based on the actual production of the theory on coal spontaneous combustion, and aiming at the basic mining circumstance of the 2207 work face in Cui-Jiagou mine, first, the determination theory of coal spontaneous combustion zone is utilized to make out the technique project, studying on the rule of gap spontaneous combustion in 2207 work face. The second, the local determinate test is carried out to confirm the"three strip"zone with the relation between ventilation volume to gas parameter, and bases on the law about temperature changes along distance inside gap. The third, the term of gap spontaneous combustion was worked out by using grey theory to relate the consistence of CO to the marching length of work face.At last, a forecasting system for defending gap spontaneous combustion is set up with parameters of temperature and supervising gases, which is based on the studying result above. And the defending measures is put forward else to prevent gap spontaneous combustion.