Mathematical model and influencing factor of temperature in refuge chamber

A temperature calculation model of refuge chamber under the influence of rock heat transfer and internal heat was built, based on the thermodynamic equations, aimed at the increase of the temperature in the confined underground space, such as the refuge chamber. The temperature curve inside refuge chamber was generated by calculating the model with Matlab, and the model was revised according to the comparison of calculation result and experiment. On the basis of the corrected model, an orthogonal experiment was conducted to analyze the factors that influence the temperature in refuge chamber, including the temperature of the roadway surface, the rock thermal conductivity, the temperature of the original rock, and the radius of the controlled temperature circle. Further research on roadway surface temperature and thermal conductivity was conducted. The results show that the most important factor is temperature of roadway surface, and others are rock thermal conductivity, temperature of the original rock, and the radius of the controlled temperature circle. © 2015, Central South University of Technology. All right reserved.