Study On Fire Detection Technology And Coal Spontaneous Combustion Prevention In The1401Face Goaf Of Feng Jiata Coal Mine

Feng Jiata mine belonging to the shallow thick coal seam spontaneous combustion,spontaneous combustion in fully mechanized mining under the condition of short period,modern mine, located in Fugu County Shanxi Province, developed surface cracks through togoaf, goaf air leak seriously, there is a lot of spontaneous combustion hidden trouble,seriously threatening the safety of mine. Therefore, study of Feng Jiata law of minespontaneous combustion in goaf of fully mechanized caving mining face and its influencingfactors provides a theoretical basis for Fire detection technology of coal spontaneouscombustion and fire control, and provides a draw for shallow coal seam mechanized cavinggoaf Spontaneous Combustion Prevention, located in Fugu mining area, With guidingsignificance.In this thesis, starting from1401working face characteristics of residual coal in goaf ofFeng Jiata mine as the object of study, experimental study of the coal seam spontaneouscombustion characteristics, measurement of the critical temperature, dry temperatureindicators gas production rate, the rate of oxygen consumption and heat intensity etcspontaneous combustion characteristic parameters, Analysis Feng Jiata characteristics of coalspontaneous combustion in coal mines. Secondly, on environmental characteristics andinfluence factors of coal spontaneous combustion in goaf, on-site field observation, throughthe surface and release the SF6tracer gas, mine detection, And then come to the1401goafsurface air leakage channel,analysis of leakage intensity; According to the actual air leakagedetection, to determine the four high-temperature region the probe, in detecting buried cupmeasuring of radon, the use of isotopes of radon detecting hidden sources of ignition in goaf.Last based on inferred results, combination mine currently has formed of mining production layout, and face ventilation way and the put top coal mining method, in1401coal faceestablished mobile type colloidal anti-fire system, and equipped with mobile type anti-firenote pulp device and the resistance of anti-fire device, formed to fly ash composite colloidalmaterial mainly of resistance of anti-fire system, After the implementation of programmes,Problems under control of coal spontaneous combustion in goaf of1401, results are obvious.