Study of CO Sources and Early-warning Concentration of Spontaneous Combustion at Air Return Corner in Fully Mechanized Mining Faces

It is imperative to have an in-depth understanding of CO overrun at the air return corner not only for pre-warning concentrations of safety and spontaneous combustion but also for providing scientific guidance for the CO management. In this study, CO sources and early-warning concentration of spontaneous combustion at the air return corner in fully mechanized mining faces were investigated. Through field measurements, the main sources...