Unsteady Coupled Heat Transfer in the Air and Surrounding Rock Mass for Mine Excavations with Distributed Heat Sources

This paper presents an unsteady coupled heat transfer model in mine air and surrounding rock mass the presence of distributed sources. The case sources is typical when analyzing temperature distribution excavations equipped with conveyor systems. For this case, asymptotic value at end excavation determined not only by exchange between but also thermal power total airflow. conclusion confirmed experimental data presented for a longwall potash mine. We formulate mathematical calculate parameters along length excavation, considering release from mass. results show that necessary correctly calculating working areas. numerical simulations allow us to recommend redistribution haulage roadways