Fire Prevention Technology in Close Distance Coal Seam Mining Working Face Crossing Fault

Based on the shortage of fire control research in the close distance coal seam mining working face passing through fault, the we analyzed reasons of CO overrunning during the period of 11501 working face passing through fault in Zhuji West Coal Mine, combined with the actual situation, used the comprehensive control means such as monitoring, sealing air leakage, cooling liquid CO₂, grouting isolation, strengthening drainage and cooperating with skip-mining technology, which has solved the problem of CO overrun.