Practice of Fire Prevention Technology of Plugging Air Leakage in Shallow-buried Spontaneous Combustion Coal Seam with Large Mining Height
Based on the fire prevention requirements of 1205 fully-mechanized mining face in A Mine,it was expounded that the key point of fire prevention was to control air leakage in goaf on the basis of in-depth analysis of the risk of spontaneous combustion in the working face,and the air leakage prevention measures that combine the end sealing of inlet and return air lane and the airtight sealing of connecting roadway were put forward,in which the latter was the focus.Combined with numerical simulation,the closed location,closed wall structure,filling material and wall thickness were discussed in detail.The application results show that the spontaneous combustion of coal left in goaf was effectively suppressed and no fire accident occurred in the working face,which can ensure the safety of production.
coal left in goafplugging air leakageairtightnumerical simulationspontaneous combustion
NETL
NSTL
万方数据
维普
