Zhao Duan

Research on the Radio Waves Propagation in Complex Coal Mine Workface

Abstract In order to study the transmission characteristics of the radio waves in a complex coal mine workface, we proposed a novel ray-tracing based radio waves propagation (RTRWP) law suitable for under-tunnel complex coal mine workface. Based on this RTRWP law, both the simulation model of the impulse responses of the radio waves and its corresponding energy consumption evaluation in complex coal mine workface can be derived. Theoretical analysis about the effect of the multiple reflections of the radio waves on the final transmission delay is also provided. Computer simulations and field tests in tunnel show that this proposed RTRWP law can work effectively to describe the actual radio wave propagation environments in complex coal mine workface.In order to study the transmission characteristics of the radio waves in a complex coal mine workface, we proposed a novel ray-tracing based radio waves propagation (RTRWP) law suitable for under-tunnel complex coal mine workface. Based on this RTRWP law, both the simulation model of the impulse responses of the radio waves and its corresponding energy consumption evaluation in complex coal mine workface can be derived. Theoretical analysis about the effect of the multiple reflections of the radio waves on the final transmission delay is also provided. Computer simulations and field tests in tunnel show that this proposed RTRWP law can work effectively to describe the actual radio wave propagation environments in complex coal mine workface.