Effects of CO2 injection factors on preventing spontaneous coal combustion in coal mine gobs: a simulation approach

The spontaneous combustion of residual coal in the gob seriously threatens safety mining. Injecting CO 2 into not only prevents from but also realizes storage mined areas. Injection flux and burial depth port are crucial for -preventing fire mine gobs. In this study, distribution oxidation zone Tanyaoping was field-measured, kinetic model built by adiabatic test. Then, a 3-D mathematical constructed based on conditions 5011 working face COMSOL Multiphysics. Furthermore, coupled effects two factors were investigated. Increases both injection result decrease volume. reasonable ranges 540–720 m 3 h -1 30–40 m, respectively. These results provide some guidelines how to prevent