Study on the Influence of High Level Borehole Pumping on Spontaneous Combustion"Three Zones"in Goaf
Based on the north 1103 working face of a certain mine in Gansu Province,numerical simulation and field observation were used to study the influence of high-level borehole pumping on spontaneous combustion"Three zones"in goaf.The results show that there is positive correlation between the air leakage path and the distance from the borehole to the working face.With the increase of borehole drainage flow,the range of oxidation zone in goaf increases,but the gas concentration in borehole and working face decreases,the boundary line of oxidation zone and heat sink zone moves in the depth of goaf and in the direction of working face.
spontaneous combustiongas extractionnumerical simulationthree zones of spontaneous combustion
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