Calculation and Analysis on Thermal Load of Mine Refuge Chamber

Abstract：With the analysis on different factors affected to the thermal load of the mine refuge chamber,based on the heat conducting model of the semi-infinite large mass,a differential equation of the heat conducted calculation for the mine refuge chamber was established.Individually,the analysis method,the 1D heat conducted numerical solution and the 3D numerical solution were applied to the calculation and comparison on the heat conduction of the rock mass for the refuge chamber.Meanwhile,the rock initial temperature,rock thermal properties features,chamber in door controlled temperature and other parameters affected to the chamber thermal load were studied.The study results showed that the rock thermal conduction of the chamber was mainly a 1D thermal conduction.The rock initial temperature and the rock heat spreading coefficient would be obvious affected to the thermal load of the chamber.Before the design of the mine refuge chamber,a site measurement and detail survey should be conducted on the rock temperature and the heat spreading coefficient.The study work could provide the references to the structure design of the refuge chamber and the determination of the refrigeration volume.