Abstract:
During the period of the propulsion hindering of 10414 working face in Yangliu Coal Mine, it made dialectical analysis of four factors-residual coal, air leakage and oxygen supply, environment heat storage and time in the large area of goaf and the surrounding compression crushing pillar. Then it estimated the spatial position of suspected high temperature oxidation area of coal in the goaf and surrounding rocks, and identified the development degree of oxidation heat storage of the residual coal. Thus, it could specifically carry out the fire prevention and extinguishing drilling, infusing some fire-fighting medium such as the liquid carbon dioxide, three-phase foam and polymer colloid. Finally, the high temperature oxidation area could be governed rapidly.