多煤层开采漏风防火技术研究

Study on Air Leakage and Fire Prevention Technology in Multi-seam Mining

近距离煤层由于采动影响产生大量漏风通道,采用束管监测法划分了煤自燃“三带”,通过SF_(6)示踪气体测定了采煤工作面、煤层之间的漏风通道,制定了束管监测、漏风通道封堵、工作面喷洒阻化剂等防灭火技术措施。经过现场应用,工作面未发生CO超标和采空区自然发火现象。

A large number of air leakage channels are produced in short-distance coal seams due to the influence of mining.The"three zones"of coal spontaneous combustion are divided by beam tube monitoring method,the air leakage channels between coal mining working face and coal seams are determined by SF_(6)tracer gas,fire prevention and extinguishing technical measures are established,such as bundle pipe monitoring,air leakage passage plugging,working face spraying inhibitor and so on.Through the field application,there is no phenomenon of CO exceeding the standard and spontaneous combustion in the goaf area.