Theoretical Study Of Heat Exchange Between Fume And Surrounding Rock During Mine Fires

On the basis of analysis the combustion of mine fire and the impact of air flow to fume during fire, analysis the theory and law of heat transfer between fume and surrounding rock when fire occurs in tunnel using Computational Fluid Dynamics.Analysis theory of heat transfer between fume and surrounding rock through advanced heat transfer firstly, to provide a theoretical basis for the subsequent experiments and numerical simulations. Secondly, Using laser flash thermal conductivity instrument for experimental simulation, measure the thermal conductivity during the heat transfer through experiments, then simulated temperature changes between fume and surrounding roadway after heat transfer during mine fire by CFD, analysis the heat transfer trend and law between fume and surrounding rock during tunnel fire. Lastly, further analysis the fume temperature distribution of roadway section during mine fire, and deducing plume temperature distribution formula of trapezoidal cross section during fire with fy and fz, Obtaining course and variation of the heat exchange between fume and surrounding rock during fire.