Abstract
Coal plays a dominant role in China's energy supply, so coal mine safety production is particularly important. Mine fire is one of the common coal mine disasters, and the goaf is the most prone place for underground fire. Therefore, the prediction and prediction of goaf fire is very important for mine fire control. Strengthen the research on goaf fire prediction and prediction, It is a great guarantee for the safety of underground workers. In this paper, taking the goaf of 3117 working face of Xin'an Coal Mine as a reference, the beam tube monitoring system is used to analyze the extraction of index gas in the goaf, and the three spontaneous combustion zones are divided according to the oxygen concentration. Finally, the minimum advancing speed of the working face is calculated to realize the prediction of spontaneous combustion fire in the goaf of the working face.